Avalo Therapeutics, Inc.
For the period ended Dec 31, 2025. Filed Mar 23, 2026.
View on SEC.govAbout this filing
A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.
FY2025 · Filed Mar 23, 2026
AVTX$6.93+4.5%Stored close · as of Nov 6, 2026
What changed in Management’s Discussion and Analysis?
Read the current filingPrevious report: 10-K
Period ended 2024-12-31; filed 2025-03-20.
0001628280-25-013986
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of OperationsCurrent report: 10-K
Period ended 2025-12-31; filed 2026-03-23.
0001534120-26-000011
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of OperationsThe baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.
Compared 89 previous paragraphs and 78 current paragraphs.
32 unchanged; 26 reworded; 19 added; 31 removed; 0 previous and 1 current paragraphs rearranged.
Tables are not compared: 6 previous and 6 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.
A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.
Added paragraphs (19)
Current report
We are a clinical stage biotechnology company fully dedicated to developing IL-1β-based treatments for immune-mediated inflammatory diseases. Our lead product candidate, abdakibart (AVTX-009), an anti-IL-1β monoclonal antibody (“mAb”) is in a Phase 2 clinical trial for hidradenitis suppurativa (“HS”). We are also exploring additional opportunities to make an impact in prevalent indications that have significant remaining unmet needs.
Current report
In 2025, we were focused on executing operationally on the development of abdakibart (AVTX-009) in HS including progressing the Phase 2 clinical trial, which we refer to the Phase 2 LOTUS trial. The global study which includes approximately 250 adults with moderate to severe hidradenitis suppurativa is designed to evaluate the efficacy and safety of subcutaneous bi-weekly and monthly dosing regimens compared to placebo. Our current focus is completing the Phase 2 LOTUS trial, preparing for the anticipated topline data readout in the second quarter of 2026, and planning for our Phase 3 trial(s).
Current report
As of December 31, 2025, we had $98.3 million in cash and cash equivalents and short-term investments. Net cash used in operating activities was $51.5 million for the year ended December 31, 2025. Our current cash, cash equivalents and short-term investments are expected to fund operations into 2028.
Current report
Net loss for the year ended December 31, 2025 was $78.3 million, representing a $43.1 million increase in net loss as compared to the prior year. Research and development expenses increased $25.6 million from the prior year driven by costs related to and supporting the Phase 2 LOTUS trial. General and administrative expenses increased $5.7 million from the prior year mainly due to increased stock-based compensation. These increases were offset by a $27.6 million acquired in-process research and development charge in 2024 that did not repeat. Further, we recognized $5.2 million of other expense for the year ended December 31, 2025 as compared to $33.5 million of other income in the prior year, which contributed to the increase in net loss. The other income recognized in the prior period primarily related to the accounting impact of the warrants that were issued and exercised in 2024.
Current report
We expect operating expenses to be largely consistent with 2025 through the Phase 2 LOTUS trial topline data readout expected in the second quarter of 2026, however, expenses beyond the data readout are difficult to predict given they will be highly dependent on the outcome of the trial.
Current report
Research and development expenses increased $25.6 million for the year ended December 31, 2025 compared to the prior period. The increase was driven by increases in clinical and CMC expenses of $14.9 million and $4.6 million, respectively. Clinical expenses increased due to progress in the current year for the Phase 2 LOTUS trial in HS, including site activations, patient trial costs and clinical trial work performed by our contract research organization, as compared to trial enabling and activation activities incurred in the prior year period. CMC expenses increased due to raw material purchases and drug manufacturing activities to support the trial during the current year.
Current report
Additionally, stock-based compensation increased $3.6 million compared to the year ended December 31, 2024 due to option and restricted stock unit grants made during the second half of 2024 and in 2025, including the annual employee grants in August 2024 and January 2025, as well as headcount additions. Salaries, benefits and related costs increased $2.3 million compared to the year ended December 31, 2024 primarily due to headcount additions.
Current report
We expect research and development expenses to be largely consistent with 2025 through the Phase 2 LOTUS trial topline data readout expected in the second quarter of 2026, however, expenses beyond the data readout are difficult to predict given they will be highly dependent on the outcome of the trial.
Current report
These increases were partially offset by a $0.3 million decrease in legal, consulting and other professional expenses compared to the prior year period related to increased expenses incurred in the prior period for accounting, reporting and consulting services incurred following the AlmataBio Transaction and concurrent private placement financing in March 2024.
Current report
We expect general and administrative expenses to be largely consistent with 2025 through the Phase 2 LOTUS trial topline data readout expected in the second quarter of 2026, however, expenses beyond the data readout are difficult to predict given they will be highly dependent on the outcome of the trial.
Current report
Other (Expense) Income, net
Current report
Other expense, net was $5.2 million for the year ended December 31, 2025 compared to other income, net of $33.5 million for the prior year period ended December 31, 2024. The $38.7 million change was primarily driven by (i) the accounting impact in the prior period of the warrant liability associated with the warrants issued in the March 2024 financing that were subsequently exercised in the fourth quarter of 2024, and (ii) the change in the fair value of the derivative liability in the current period driven by changes in assumptions related to the AVTX-007 Milestones and Royalties (as defined in Note 6 to the consolidated financial statements included in this Annual Report on Form 10-K). Further, we incurred $9.2 million of private placement transaction costs in the prior year period that did not repeat in the current period, largely consisting of the placement agent fee of $7.0 million and $1.7 million fee payable upon exercise of the warrants issued in the private placement investment.
Current report
For the year ended December 31, 2025, we generated a net loss of $78.3 million and negative cash flows from operations of $51.5 million. As of December 31, 2025, we had $98.3 million in cash and cash equivalents and short-term investments.
Current report
We primarily use cash to fund the ongoing development of abdakibart (AVTX-009) and costs associated with its organizational infrastructure. As of December 31, 2025, we had $98.3 million in cash and cash equivalents and short-term investments. We expect cash used in operations to be largely consistent with 2025 through the Phase 2 LOTUS trial topline data readout expected in the second quarter of 2026, however, cash used in operations beyond the data readout are difficult to predict given they will be highly dependent on the outcome of the trial.
Current report
Net cash used in operating activities was $51.5 million for the year ended December 31, 2025 and consisted primarily of net loss of $78.3 million, partially offset by net non-cash charges of $23.0 million and changes in our operating assets and liabilities of $3.8 million. The non-cash charges consisted primarily of $13.6 million in stock-based compensation and a change in the fair value of the derivative liability of $9.5 million. Changes in our operating assets and liabilities consisted primarily of a $2.6 million increase in prepaid expenses and other current assets due to our ongoing clinical work and a $6.7 million increase in accrued expenses and other liabilities primarily due to increased drug manufacturing activities as well as compensation and benefits accruals.
Current report
We expect cash used in operations to be largely consistent with 2025 through the Phase 2 LOTUS trial topline data readout expected in the second quarter of 2026, however, cash used in operations beyond the data readout are difficult to predict given they will be highly dependent on the outcome of the trial.
Current report
Net cash provided by financing activities for the year ended December 31, 2025 consisted of proceeds of $14.8 million from the sales of shares made pursuant to our “at-the-market” sales agreement and proceeds of $0.8 million from stock option exercises, partially offset by $0.5 million in cash paid to tax authorities related to withholding shares to satisfy RSU vesting withholding obligations on behalf of employees.
Current report
Each Restricted Stock Unit (“RSU”) represents one equivalent share of our common stock to be issued after satisfying the applicable continued service-based vesting criteria over a specified period. The fair value of these RSUs is based on the closing price of our common stock on the date of the grant. The compensation for RSUs is recognized on a straight-line basis over the vesting period.
Current report
Each Performance Stock Unit (“PSU”) represents one equivalent share of our common stock to be issued after achievement of the performance goals specified in the grant. We estimate the fair value of our PSUs as of the grant date based upon the expected likelihood of achievement of the performance goals specified in the grant and the closing market price of our common stock on the date of grant. We recognize stock-based compensation expense over the requisite service period, if it is probable that the performance goal will be achieved.
Removed paragraphs (31)
Previous report
Avalo Therapeutics, Inc. (the “Company,” “Avalo” or “we”) is a clinical stage biotechnology company focused on the treatment of immune dysregulation. Avalo’s lead asset is AVTX-009, an anti-IL-1β monoclonal antibody (“mAb”), targeting inflammatory diseases.
Previous report
Our initial focus in 2024 was augmenting our immunology pipeline and securing financing to develop our pipeline. In March 2024, we acquired our lead asset, AVTX-009, through our acquisition of AlmataBio, Inc. (“AlmataBio”). Concurrently, we executed a private placement of $185 million, including initial upfront investment of $115.6 million received in March 2024. We received the remaining $69.4 million of gross proceeds in the fourth quarter of 2024 upon the full exercise of the warrants issued as part of the transaction. Immediately following the acquisition of AVTX-009, our focus shifted to executing operationally on the development of AVTX-009 for the treatment of hidradenitis suppurativa (“HS”). This included activation of the Investigational New Drug (“IND”) application in July 2024 and enrolling the first patient in our Phase 2 LOTUS trial in October 2024 (the “LOTUS Trial”). The LOTUS Trial is a global study designed to enroll 180 adults with HS to assess the efficacy and safety of convenient subcutaneous bi-weekly and monthly dosing regimens of AVTX-009, compared to placebo, with topline data expected in 2026.
Previous report
Our focus in 2025 is continuing to execute operationally on the development of AVTX-009, most notably the progression of the LOTUS Trial. We are committed to executing the LOTUS Trial effectively and efficiently, as well as exploring AVTX-009’s potential broad applications for other immune-mediated diseases as we work toward the announcement of our second indication.
Previous report
As of December 31, 2024, Avalo had $134.5 million in cash and cash equivalents, representing a $127.1 million increase compared to December 31, 2023. During the year, we raised approximately $175.8 million of net proceeds from a private placement and the subsequent exercise of warrants issued in the private placement. Net cash used in operating activities were $49.1 million for the year ended December 31, 2024, which includes $12.5 million of milestone payments to AlmataBio pursuant to the terms of the acquisition in the first quarter. The Company’s current cash on hand is expected to fund operations into at least 2027.
Previous report
Net loss for the year ended December 31, 2024 was $35.1 million, representing a $3.6 million increase in net loss as compared to the prior year. Total operating expenses increased by $39.7 million, which was driven by the recognition of $27.6 million of acquired in-process research and development from the acquisition of AlmataBio in the first quarter of 2024, as well as a $10.7 million increase in research and development expenses and a $6.9 million increase in general and administrative expenses. Increased research and development expenses were driven by AVTX-009 development costs, including trial initiation and progression, as well as manufacturing, partially offset by limited development costs incurred in 2024 on other legacy programs. Increased general and administrative costs were driven by employee compensation costs, including stock-based compensation expense, as well as increased consulting, legal and other professional expenses following acquisition and financing that took place in the first quarter of 2024. Operating expense increases were partially offset by a $37.7 million increase to other income, primarily related to the warrants that were issued in 2024.
Previous report
We expect future research and development expenses and cash used in operations, excluding the milestone payments made to the former AlmataBio stockholders, to increase in 2025 as a result of our development plans for AVTX-009, including the continued execution of the LOTUS Trial which commenced in October 2024.
Previous report
Avalo recognized no license and other revenue for the year ended December 31, 2024. The Company recognized $0.5 million for the year ended December 31, 2023 as a result of the sale of its rights, title and interest in assets relating to the 800 Series (as defined in Note 4 to the consolidated financial statements) to AUG Therapeutics, LLC (“AUG”).
Previous report
We recognized a benefit of $0.4 million to cost of product sales for the year ended December 31, 2024, compared to cost of product sales of $1.3 million for the same period in 2023. The benefit recognized in the current period was mainly driven by the reversal of a $1.0 million reserve against the receivable due from Aytu BioScience, Inc. (“Aytu”) in December 2024 given that Avalo expected the receivable to be collectible as of December 31, 2024, partially offset by additional royalty on the profit share as a result of a change in estimate for commercial liabilities. Avalo collected the receivable from Aytu in January 2025. The cost of product sales incurred in the prior period was driven by units sold.
Previous report
Research and development expenses increased $10.7 million for the year ended December 31, 2024, compared to the year ended December 31, 2023. Notably, clinical expenses increased $4.2 million in the current period due to LOTUS Trial activities including expenses incurred to activate the IND and trial initiation and execution expenses. Additionally, chemistry, manufacturing, and control (“CMC”) expenses increased $3.3 million as a result of AVTX-009 raw material purchases and manufacturing. Clinical and CMC expense increases were partially offset by clinical development and manufacturing activity ongoing in the prior year for quisovalimab that did not repeat in the current year given the conclusion of the Phase 2 trial of quisovalimab in June 2023.
Previous report
Salaries, benefits and related costs increased $2.6 million in the current period primarily due to increased non-equity incentive plan compensation expense incurred. Stock-based compensation expense increased $1.1 million due to option and restricted stock unit grants during the period, including the annual grant in August 2024.
Previous report
We expect future research and development expenses to increase as a result of our development plans for AVTX-009, including the continued execution of the LOTUS Trial which commenced in October 2024.
Previous report
Although we expect the majority of our future operating expense increases will be focused on research and development activities to progress AVTX-009, we also expect moderate increases to general and administrative expenses to support the AVTX-009 program.
Previous report
Goodwill Impairment
Previous report
There was no goodwill impairment loss recognized for the year ended December 31, 2024. The Company recognized $3.9 million of goodwill impairment loss for its sole reporting unit for the year ended December 31, 2023 as part of its annual goodwill impairment test performed on the last day of the fiscal year. The impairment loss recognized represented the difference between the reporting unit’s carrying value and its fair value as of December 31, 2023.
Previous report
Other Income (Expense), net
Previous report
Other income, net increased $37.7 million for the year ended December 31, 2024 as compared to the prior period in 2023, primarily driven by the accounting impact of the warrant liability associated with the warrants issued in the March 2024 financing that were subsequently exercised in the fourth quarter of 2024. For the year ended December 31, 2024, we recognized a $79.3 million loss at issuance on the excess of initial warrant liability fair value ($194.9 million) over the private placement proceeds ($115.6 million). The loss was more than offset by a $121.6 million gain recognized on the change in fair value of the warrant liability from its initial valuation ($194.9 million) to the settlement of the warrant liability in the fourth quarter of 2024 ($73.3 million) upon the full exercise of the warrants. This gain was mainly driven by a decrease in the stock price from the initial valuation ($21.75 per share) to the stock prices on each warrant exercise date (weighted average of approximately $12.00 per share). Given the full exercise of the warrants in the fourth quarter of 2024, there was no warrant liability as of December 31, 2024, and we therefore do not expect related future activity in other income (expense), net. Refer to Note 6 - Fair Value Measurements of the consolidated financial statements for more information.
Previous report
Additionally, interest income increased by $6.7 million contributing to the overall increase to other income, net. The increase was a result of the Company’s increased cash position, paired with no interest expense in 2024 given the Company’s full payoff of its loan in 2023.
Previous report
The increase in other income, net was partially offset by a $2.9 million loss recognized on the increase in fair value of the derivative liability driven by changes in assumptions utilized in the valuation of both the AVTX-501 Milestone and the AVTX-007 Milestones and Royalties (as defined in Note 6 - Fair Value Measurements of the consolidated financial statements) due to updated publicly available information of the development plans for the assets by J&J and Apollo, respectively (as defined in Note 6 to the consolidated financial statements). Refer to Note 6 - Fair Value Measurements of the consolidated financial statements for more information. The overall increase to other income, net was also partially offset by $9.2 million of private placement transaction costs, largely consisting of the private placement agent fee of $7.0 million due in March 2024 and $1.7 million due on the exercise of the warrants.
Previous report
For the year ended December 31, 2024, Avalo generated a net loss of $35.1 million and negative cash flows from operations of $49.1 million. As of December 31, 2024, Avalo had $134.5 million in cash and cash equivalents. For the year ended December 31, 2024, the Company raised approximately $175.8 million of net proceeds from a private placement and the subsequent exercise of warrants issued in the private placement.
Previous report
The Company primarily uses cash to fund the ongoing development of our research and development pipeline assets and costs associated with its organizational infrastructure. As of December 31, 2024, Avalo had $134.5 million in cash and cash equivalents, representing a $127.1 million increase compared to December 31, 2023. We expect cash used in operating activities, excluding the milestone payments made to the former AlmataBio stockholders, to increase in future periods as a result of our development plans for AVTX-009, including the execution of the LOTUS Trial which commenced in October 2024.
Previous report
Net cash used in operating activities in 2023 consisted primarily of a net loss of $31.5 million and non-cash adjustments to reconcile net loss to net cash used in operating activities, including goodwill impairment of $3.9 million, stock-based compensation of $3.5 million, accretion of debt discount of $1.8 million, and increase in fair value of the derivative liability of $0.7 million. Accrued expenses and accounts payable decreased an aggregate of $11.5 million from December 31, 2022.
Previous report
We expect cash used in operating activities, excluding the milestone payments made to the former AlmataBio stockholders, to increase in future periods as a result of our development plans for AVTX-009, including the continued execution of the LOTUS Trial which commenced in October 2024.
Previous report
Net cash provided by financing activities for the year ended December 31, 2023 consisted of net proceeds of $46.2 million from equity financings, partially offset by debt principal payments of $21.2 million, inclusive of the full payoff of the loan in September of 2023. Avalo fully retired its debt in 2023.
Previous report
On March 28, 2024, the Company closed a private placement in which the investors received (i) 19,946 shares of Series C Preferred Stock and (ii) warrants to purchase up to an aggregate of 11,967,526 shares of Avalo’s common stock (or a number of shares of Series C Preferred Stock convertible into the number of shares of common stock the warrant is then exercisable into) with an exercise price of $5.796933. Refer to Note 11 - Capital Structure and sub-header “March 2024 Financing” of the consolidated financial statements for more information.
Previous report
The Company determined that the warrants did not satisfy the conditions to be accounted for as equity instruments. As the warrants did not meet the equity contract scope exception, the Company classified the warrants as a derivative liability upon issuance.
Previous report
The Company’s warrant liability was measured at fair value on the issuance date and was measured at fair value each reporting period thereafter until the warrants were fully exercised in the fourth quarter of 2024. As of December 31, 2024, there were no warrants associated with the private placement outstanding and thus no corresponding warrant liability.
Previous report
For the initial warrant valuation in the first quarter of 2024 and subsequent fair value measurement at each reporting period prior to exercises, the Company utilized the Black-Scholes option pricing model to measure fair value of the warrants, which required assumptions including the value of the stock on the measurement date, exercise price, expected term, expected volatility, and the risk-free interest rate. Certain assumptions, including the expected term and expected volatility, were subjective and required judgment. The warrant liability was classified as a Level 3 instrument as its value was based on unobservable market inputs.
Previous report
The initial fair value measurement of the warrant liability was $194.9 million and exceeded the initial gross proceeds received from the private placement of $115.6 million, resulting in a $79.3 million loss at issuance of the excess of initial liability fair value. Upon exercise of the warrants in the fourth quarter of 2024, the final fair value of the warrant liability was $73.3 million. Given the full exercise of the warrants, there was no warrant liability as of December 31, 2024, resulting in the $121.6 million gain on the change in fair value recognized in other income (expense), net in the accompanying consolidated financial statements of operations and comprehensive loss for the year ended December 31, 2024. Refer to Note 11 - Capital Structure of the consolidated financial statements for additional discussion regarding the issuance of the Series C Preferred Stock and common stock pursuant to the warrant exercises.
Previous report
Asset Acquisition
Previous report
To evaluate a transaction to assess whether or not the transaction should be accounted for as a business combination or asset acquisition, the Company first applies a screen test to determine if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or group of similar identifiable assets. If the screen is met, the transaction is accounted for as an asset acquisition. If the screen is not met, further determination is required as to whether the Company has acquired inputs and processes that have the ability to create outputs which would meet the definition of a business. Significant judgment is required in the application of the screen test to determine whether an acquisition is a business combination or an acquisition of assets.
Previous report
In the first quarter of 2024, we acquired AVTX-009, through a merger with AlmataBio and its wholly owned subsidiary, resulting in us acquiring $27.6 million of IPR&D. The fair value of the IPR&D, substantially all of which is related to AVTX-009, was immediately recognized as acquired IPR&D expense as there is no alternative future use.
Reworded paragraphs (26)
Previous wording
Management’s primary evaluation of Avalo’s success is the ability to progress its programs towards commercialization or opportunistically out-licensing rights to indications or geographies. We believe the ability to achieve the next anticipated milestone as presented in the section entitled “Business” in Item 1 of this Annual Report on Form 10-K represents our most immediate evaluation point as to the progression of our pipeline.
Current wording
Management’s primary evaluation of our success is the ability to progress its programs towards commercialization or opportunistically out-licensing rights to indications or geographies. We believe the ability to achieve the next anticipated milestone as presented in the section entitled “Business” in Item 1 of this Annual Report on Form 10-K represents our most immediate evaluation point as to the progression of our pipeline.
Previous wording
The Company’s license and supply agreement for Millipred® expired, as planned, on September 30, 2023. The Company continues to monitor estimates for commercial liabilities, such as sales returns. As additional information becomes available, the Company could recognize expense (or benefit) for differences between actuals or updated estimates to the reserves previously recognized. As such, the Company recognized $0.4 million in product revenue, net for the year ended December 31, 2024, compared to $1.4 million related to product sales for the year ended December 31, 2023. We do not expect future gross product revenue for Millipred®.
Current wording
We recognized minimal net product revenue for the year ended December 31, 2025 compared to $0.4 million for the year ended December 31, 2024, which related to a change in estimate of commercial liabilities, mainly sales returns, for the Millipred® product. Our license and supply agreement for Millipred®expired on September 30, 2023 as planned and as such there was no gross revenue recognized from sales for the years ended December 31, 2025 and December 31, 2024. We do not expect significant movement in estimates of commercial liabilities, however, if additional information becomes available, we could recognize expense (or a benefit) for differences between actuals or updated estimates to the reserves previously recognized, which could be recognized in net product revenue.
Previous wording
The Company will continue to monitor estimates for commercial liabilities, such as sales returns and profit share with the supplier pursuant to the reconciliation process. As additional information becomes available, the Company could recognize expense (or a benefit) for differences between actuals or updated estimates to the reserves previously recognized, which could be recognized in cost of product sales.
Current wording
We recognized no cost of product sales for the year ended December 31, 2025 compared to a benefit of $0.4 million for the same period in 2024, which related to the change in an estimate of commercial liabilities for the Millipred®product. The Company ceased selling Millipred®in September 2023. We do not expect significant movement in estimates of commercial liabilities, however, if additional information becomes available, we could recognize expense (or a benefit) for differences between actuals or updated estimates to the reserves previously recognized, which could be recognized in cost of product sales.
Previous wording
In the first quarter of 2024, we acquired AVTX-009 pursuant to the AlmataBio Transaction (as defined in Note 3 to the consolidated financial statements), resulting in us recording $27.6 million of acquired in-process research and development (“IPR&D”). We recognized the fair value of the IPR&D, substantially all of which is related to AVTX-009, for the year ended December 31, 2024 as there is no alternative future use. There was no acquired IPR&D for the year ended December 31, 2023.
Current wording
In the first quarter of 2024, we acquired abdakibart (AVTX-009) through the AlmataBio Transaction (as defined in Note 3 to the consolidated financial statements included in this Annual Report on Form 10-K), resulting in us acquiring $27.6 million of in-process research and development (“IPR&D”) for the year ended December 31, 2024. There was no acquired IPR&D for the year ended December 31, 2025.
Previous wording
General and administrative expenses increased $6.9 million for the year ended December 31, 2024, compared to the year ended December 31, 2023. The increase was driven by a $2.3 million increase in salaries, benefits and related costs due to increased non-equity incentive plan compensation expense, as well as a $1.3 million increase to stock-based compensation expense due to option and restricted stock unit grants during the period, including the annual grant in August 2024. In addition, legal, consulting and other professional expenses increased $2.1 million for accounting and reporting work incurred as well as increased consulting services following and largely related to the AlmataBio acquisition and March 2024 private placement. Commercial planning and marketing expenses increased $0.8 million due to work performed for HS and indication expansion, such as market opportunity assessments and competitive intelligence.
Current wording
General and administrative expenses increased $5.7 million for the year ended December 31, 2025 compared to the prior year period. The increase was driven primarily by a $4.2 million increase in stock-based compensation expense due to option and restricted stock unit grants made during the second half of 2024 and in 2025, including the annual grants in August 2024 and January 2025 as well as new hire grants. Salaries, benefits and related costs increased $1.9 million compared to the year ended December 31, 2024 due to headcount additions. This increase was partially offset by a $0.3 million decrease to commercial planning and marketing as we transitioned certain third-party consulting engagements for market opportunity assessments and competitive intelligence to salaried headcount.
Previous wording
The following table summarizes our other income (expense), net for the years ended December 31, 2024 and 2023:
Current wording
The following table summarizes our other (expense) income, net for the years ended December 31, 2025 and 2024:
Previous wording
The Company recognized minimal income tax expense for the years ended December 31, 2024 and 2023.
Current wording
We recognized minimal income tax expense for the years ended December 31, 2025 and 2024.
Previous wording
Since inception, we have incurred significant operating and cash losses from operations. We have primarily funded our operations to date through sales of equity securities, out-licensing transactions and sales of assets.
Current wording
Since inception, we have incurred significant operating losses and negative cash flows from our operations. We have primarily funded our operations to date through sales of equity securities, out-licensing transactions and sales of assets.
Previous wording
Based on our current operating plans, we expect that our existing cash and cash equivalents are sufficient to fund operations into at least 2027. The Company closely monitors its cash and cash equivalents and seeks to balance the level of cash and cash equivalents with our projected needs to allow us to withstand periods of uncertainty relative to the availability of funding on favorable terms. We may satisfy any future cash needs through sales of equity securities under the Company’s at-the-market program or other equity financings, out-licensing transactions, strategic alliances/collaborations, sale of programs, and/or mergers and acquisitions. There can be no assurance that any financing or business development initiatives can be realized by the Company, or if realized, what the terms may be. To the extent that we raise capital through the sale of equity, the ownership interest of our existing stockholders will be diluted, and the terms may include liquidation or other preferences that adversely affect the rights of our stockholders. Further, if the Company raises additional funds through collaborations, strategic alliances or licensing arrangements with third parties, the Company might have to relinquish valuable rights to its technologies, future revenue streams, research programs or product candidates.
Current wording
Based on our current operating plans, we expect that our existing cash, cash equivalents and short-term investments are sufficient to fund operations into 2028. We closely monitor our cash and cash equivalents and seek to balance the level of cash and cash equivalents with our projected needs to allow us to withstand periods of uncertainty relative to the availability of funding on favorable terms. We may satisfy any future cash needs through sales of equity securities under the our at-the-market program or other equity financings, out-licensing transactions, strategic alliances/collaborations, sale of programs, and/or mergers and acquisitions. There can be no assurance that any financing or business development initiatives can be realized by us, or if realized, what the terms may be. To the extent that we raise capital through the sale of equity, the ownership interest of our existing stockholders will be diluted, and the terms may include liquidation or other preferences that adversely affect the rights of our stockholders. Further, if we raise additional funds through collaborations, strategic alliances or licensing arrangements with third parties, we might have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates.
Previous wording
Net cash used in operating activities in 2024 consisted primarily of a net loss of $35.1 million and non-cash adjustments to reconcile net loss to net cash used in operating activities including the change in fair value of the warrant liability of $121.6 million, excess of initial warrant fair value over private placement proceeds of $79.3 million, acquired IPR&D of $27.6 million, $12.5 million milestone payments made to the former AlmataBio stockholders, the change in fair value of the derivative liability of $2.9 million, and stock-based compensation of $5.9 million. Prepaid expenses increased $2.9 million from December 31, 2023 due to the increased research and development activity for AVTX-009.
Current wording
Net cash used in operating activities in 2024 consisted primarily of a net loss of $35.1 million and non-cash adjustments to reconcile net loss to net cash used in operating activities including the change in fair value of the warrant liability of $121.6 million, excess of initial warrant fair value over private placement proceeds of $79.3 million, acquired IPR&D of $27.6 million, $12.5 million milestone payments made to the former AlmataBio stockholders, the change in fair value of the derivative liability of $2.9 million, and stock-based compensation of $5.9 million. Prepaid expenses increased $2.9 million from December 31, 2023 due to the increased research and development activity for abdakibart (AVTX-009).
Previous wording
Net cash provided by (used in) investing activities
Current wording
Net cash used in investing activities for the year ended December 31, 2025 consisted of $113.7 million of purchases of available-for-sale investments, partially offset by $32.0 million of proceeds from maturities of available-for-sale investments.
Previous wording
Net cash provided by investing activities for the year ended December 31, 2024 consisted of the cash acquired as part of the AlmataBio Transaction. Net cash used in investing activities was minimal for the year ended December 31, 2023.
Current wording
Net cash provided by investing activities for the year ended December 31, 2024 consisted of the cash acquired as part of the AlmataBio Transaction.
Previous wording
In preparing the financial statements, the Company makes estimates and assumptions that have an impact on assets, liabilities, revenue and expenses reported. These estimates can also affect supplemental information disclosed by us, including information about contingencies, risk and financial condition. The Company believes, given current facts and circumstances, our estimates and assumptions are reasonable, adhere to U.S. generally accepted accounting principles (“GAAP”) and are consistently applied. Inherent in the nature of an estimate or assumption is the fact that actual results may differ from estimates, and estimates may vary as new facts and circumstances arise.
Current wording
In preparing the financial statements, we make estimates and assumptions that have an impact on assets, liabilities, revenue and expenses reported. These estimates can also affect supplemental information disclosed by us, including information about contingencies, risk and financial condition. We believe, given current facts and circumstances, our estimates and assumptions are reasonable, adhere to U.S. generally accepted accounting principles (“GAAP”) and are consistently applied. Inherent in the nature of an estimate or assumption is the fact that actual results may differ from estimates, and estimates may vary as new facts and circumstances arise.
Previous wording
The Company applies the provisions of ASC 718, Compensation—Stock Compensation, which requires the measurement and recognition of compensation expense for all stock‑based awards made to employees, including employee stock options, in the statements of operations and comprehensive loss.
Current wording
We apply the provisions of ASC 718, Compensation—Stock Compensation, which requires the measurement and recognition of compensation expense for all stock‑based awards made to employees, including employee stock options, in the statements of operations and comprehensive loss.
Previous wording
For stock options issued to employees and members of the board of directors for their services, the Company estimates the grant date fair value of each option using the Black‑Scholes option pricing model. The use of the Black‑Scholes option pricing model requires management to make assumptions with respect to the expected term of the option, the expected volatility of the common stock consistent with the expected life of the option, risk‑free interest rates and expected dividend yields of the common stock. Additionally, the stock price on the date of grant is utilized in the Black-Scholes option pricing model. For awards subject to service‑based vesting conditions, including those with a graded vesting schedule, the Company recognizes stock‑based compensation expense equal to the grant date fair value of stock options on a straight‑line basis over the requisite service period, which is generally the vesting term. Forfeitures are recorded as they are incurred as opposed to being estimated at the time of grant and revised.
Current wording
For stock options issued to employees and members of the board of directors for their services, we estimate the grant date fair value of each option using the Black‑Scholes option pricing model. The use of the Black‑Scholes option pricing model requires management to make assumptions with respect to the expected term of the option, the expected volatility of the common stock consistent with the expected term of the option, risk‑free interest rates and expected dividend yields of the common stock. Additionally, the stock price on the date of grant is utilized in the Black-Scholes option pricing model. For awards subject to service‑based vesting conditions, including those with a graded vesting schedule, we recognize stock‑based compensation expense equal to the grant date fair value of stock options on a straight‑line basis over the requisite service period, which is generally the vesting term. Forfeitures are recorded as they are incurred.
Previous wording
The estimates involved in the valuations include inherent uncertainties and the application of our judgment. As a result, if factors change and we use significantly different assumptions or estimates when valuing our stock options, our stock‑based compensation expense could be materially different. We recognize compensation expense for only the portion of awards that are expected to vest.
Current wording
The estimates involved in the valuations include inherent uncertainties and the application of our judgment. As a result, if factors change and we use significantly different assumptions or estimates when valuing our stock options, our stock‑based compensation expense could be materially different.
Previous wording
In the fourth quarter of 2022, Avalo sold its economic rights to future milestone and royalty payments for previously out-licensed assets AVTX-501, AVTX-007, and AVTX-611 to ES Therapeutics, LLC (“ES”), an affiliate of Armistice Capital Master Fund Ltd. (an affiliate of Armistice Capital, LLC, and collectively “Armistice”), in exchange for $5.0 million (the “ES Transaction”). At the time of the transaction, Armistice was a significant stockholder of the Company whose chief investment officer, Steven Boyd, and managing director, Keith Maher, served on Avalo’s Board until August 8, 2022. The ES Transaction was approved in accordance with Avalo’s related party transaction policy.
Current wording
In the fourth quarter of 2022, we sold our economic rights to future milestone and royalty payments for previously out-licensed assets AVTX-501, AVTX-007, and AVTX-611 to ES Therapeutics, LLC (“ES”), an affiliate of Armistice Capital LLC (“Armistice”), in exchange for $5.0 million (the “ES Transaction”). At the time of the transaction, Armistice was a significant stockholder of ours whose chief investment officer, Steven Boyd, and managing director, Keith Maher, served on our Board until August 8, 2022. The ES Transaction was approved in accordance with our related party transaction policy.
Previous wording
The economic rights sold include (a) rights to a milestone payment of $20.0 million upon the filing and acceptance of an NDA for AVTX-501 pursuant to an agreement with Janssen Pharmaceuticals, Inc., now Johnson & Johnson Innovative Medicine (“J&J”) (the “AVTX-501 Milestone”) and (b) rights to any future milestone payments and royalties relating to AVTX-007 under a license agreement with Apollo AP43 Limited, including up to $6.25 million of development milestones, up to $67.5 million in sales-based milestones, and royalty payments of a low single digit percentage of annual net sales (which percentage increases to another low single digit percentage if annual net sales exceed a specified threshold) (the “AVTX-007 Milestones and Royalties”). In addition, Avalo waived all its rights to AVTX-611 sales-based payments of up to $20.0 million that were payable by ES.
Current wording
The economic rights sold include (a) rights to a milestone payment of $20.0 million upon the filing and acceptance of an NDA for AVTX-501 pursuant to an agreement with Janssen Pharmaceutics, Inc., now Johnson & Johnson Innovative Medicine (“J&J”) (the “AVTX-501 Milestone”) and (b) rights to any future milestone payments and royalties relating to AVTX-007 under a license agreement with Apollo AP43 Limited (“Apollo”), including up to $6.25 million of development milestones, up to $67.5 million in sales-based milestones, and royalty payments over a ten year period of a low single digit percentage of annual net sales (which percentage increases to another low single digit percentage if annual net sales exceed a specified threshold) (the “AVTX-007 Milestones and Royalties”). In addition, we waived all of our rights to AVTX-611 sales-based payments of up to $20.0 million that were payable by ES.
Previous wording
The exchange of the economic rights of the AVTX-501 Milestone and AVTX-007 Milestones and Royalties for cash met the definition of a derivative instrument. The fair value of the derivative liability is determined using a combination of a scenario-based method and an option pricing method (implemented using a Monte Carlo simulation). The significant inputs include probabilities of success, expected timing, and forecasted sales as well as market-based inputs for volatility, risk-adjusted discount rates and allowance for counterparty credit risk, all of which are unobservable and based on the best information available to Avalo. Certain information used in the valuation is inherently limited in nature and could differ from J&J and Apollo’s internal estimates.
Current wording
The exchange of the economic rights of the AVTX-501 Milestone and AVTX-007 Milestones and Royalties for cash met the definition of a derivative instrument. The fair value of the derivative liability is determined using a combination of a scenario-based method and an option pricing method (implemented using a Monte Carlo simulation). The significant inputs including probabilities of success, expected timing, and forecasted sales as well as market-based inputs for volatility, risk-adjusted discount rates and allowance for counterparty credit risk are unobservable and based on the best information available to us. Certain information used in the valuation is inherently limited in nature and could differ from J&J’s and Apollo’s internal estimates.
Previous wording
The fair value of the derivative liability as of the transaction date was approximately $4.8 million, of which $3.5 million was attributable to the AVTX-501 Milestone and $1.3 million was attributable to the AVX-007 Milestones and Royalties. Subsequent to the transaction date, at each reporting period, the derivative liability is remeasured at fair value. As of December 31, 2024, the fair value of the derivative liability was $8.5 million, all of which was attributable to the AVTX-007 Milestones and Royalties and $0.4 million of which was classified as a current liability with the remainder classified as a non-current liability as of December 31, 2024. For the year ended December 31, 2024, the $2.9 million loss on the change in fair value was recognized in other income (expense), net in the accompanying consolidated statements of operations and comprehensive loss.
Current wording
The fair value of the derivative liability as of the transaction date was approximately $4.8 million, of which $3.5 million was attributable to the AVTX-501 Milestone and $1.3 million was attributable to the AVTX-007 Milestones and Royalties. Subsequent to the transaction date, at each reporting period, the derivative liability is remeasured at fair value. As of December 31, 2025, the fair value of the derivative liability was $18.0 million, all of which was attributable to the AVTX-007 Milestone and Royalties and was classified as a non-current liability. For the year ended December 31, 2025, the $9.5 million change in fair value was recognized in other expense, net in the accompanying consolidated statements of operations and comprehensive loss.
Previous wording
The fair value of the AVTX-501 Milestone was deemed to be $0.0 million, driven by less than 1% probability of success based on Avalo’s interpretation of a recent announcement from J&J noting the discontinuation of the aticaprant depression program (previously referred to as AVTX-501 by Avalo), which was the only indication that we are aware they were pursuing, paired with a lack of commitment to an alternative indication. The fair value of AVTX-007 Milestones and Royalties was primarily driven by sales forecasts with peak annual net sales reaching $1.8 billion in atopic dermatitis, which is a much larger market opportunity than adult-onset Still’s disease (the previous indication being pursued that was contemplated in valuations through the first quarter of 2024), an approximate 17% probability of success, and an estimated time to commercialization of approximately 6.0 years. We estimated these unobservable inputs based on limited publicly available information and therefore could differ from J&J’s and Apollo’s respective internal development plans, assessments of probability of success and other inputs of our fair value calculation. Any changes to these inputs may result in significant changes to the fair value measurement. Notably, the peak annual net sales forecast (for the AVTX-007 Milestones and Royalties) and the probability of success (for both the AVTX-501 Milestone and the AVTX-007 Milestone and Royalties) are the largest drivers of the fair value, so changes to either would likely result in significant changes to the fair value.
Current wording
The fair value of the AVTX-501 Milestone was deemed to be de minimis, driven by less than 1% probability of success based on our interpretation of an announcement from J&J in March 2025, noting the discontinuation of the aticaprant depression program (previously referred to as AVTX-501 by us), which was the only indication publicly disclosed, paired with a lack of commitment to an alternative indication. The fair value of AVTX-007 Milestones and Royalties was primarily driven by sales forecasts with peak annual net sales reaching $1.7 billion in atopic dermatitis, an approximate 41% probability of success, and an estimated time to commercialization of approximately 6.5 years, based on our interpretation of Apollo’s September 2025 announcement that the drug met the primary endpoint in its Phase 2a clinical trial in atopic dermatitis. We estimated these unobservable inputs based on limited publicly available information and therefore could differ from J&J’s and Apollo’s respective internal development plans, assessments of probability of success and other inputs of our fair value calculation. Any changes to these inputs may result in significant changes to the fair value measurement. Notably, the peak annual net sales forecast (for the AVTX-007 Milestones and Royalties) and the probability of success (for both the AVTX-501 Milestone and the AVTX-007 Milestone and Royalties) are the largest drivers of the fair value, so changes to either would likely result in significant changes to their respective fair values.
Previous wording
In the event that J&J and/or Apollo are required to make payment(s) to ES Therapeutics pursuant to the underlying agreements, Avalo will recognize revenue under its existing contracts with those customers for that amount when it is no longer probable there would be a significant revenue reversal with any differences between the fair value of the derivative liability related to that payment immediately prior to the revenue recognition and revenue recognized to be recorded as other expense. However, given Avalo is no longer entitled to collect these payments, the potential ultimate settlement of the payments in the future from J&J and/or Apollo to ES Therapeutics (and the future mark-to-market activity each reporting period) will not impact Avalo’s future cash flows.
Current wording
In the event that J&J and/or Apollo are required to make payment(s) to ES Therapeutics pursuant to the underlying agreements, we will recognize revenue under our existing contracts with those customers for that amount when it is no longer probable there would be a significant revenue reversal with any differences between the fair value of the derivative liability related to that payment immediately prior to the revenue recognition and revenue recognized to be recorded as other expense. However, given we are no longer entitled to collect these payments, the potential ultimate settlement of the payments in the future from J&J and/or Apollo to ES Therapeutics (and the future mark-to-market activity each reporting period) will not impact our future cash flows.
Previous wording
Costs for certain development activities, such as clinical trials, are recognized based on an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations, or information provided to the Company by its vendors, such as clinical research organizations, with respect to their actual costs incurred. Payments for these activities are based on the terms of the individual arrangements, which may differ from the pattern of costs incurred, and are reflected in the financial statements as prepaid or accrued research and development expense, as the case may be.
Current wording
Costs for certain development activities, such as clinical trials, are recognized based on an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations, or information provided to us by our vendors, such as clinical research organizations, with respect to their actual costs incurred. Payments for these activities are based on the terms of the individual arrangements, which may differ from the pattern of costs incurred, and are reflected in the financial statements as prepaid or accrued research and development expense, as the case may be.
Previous wording
The Company is a party to license and development agreements for in-licensed research and development assets with third parties. Such agreements often contain future payment obligations such as royalties and milestone payments. The Company recognizes a liability (and related research and development expense) for each milestone if and when such milestone is probable and can be reasonably estimated. As typical in the biotechnology industry, each milestone has its own unique risks that the Company evaluates when determining the probability of achieving each milestone and the probability of success evolves over time as the programs progress and additional information is obtained. The Company considers numerous factors when evaluating whether a given milestone is probable including (but not limited to) the regulatory pathway, development plan, ability to dedicate sufficient funding to reach a given milestone and the probability of success.
Current wording
We are party to license and development agreements for in-licensed research and development assets with third parties. Such agreements often contain future payment obligations such as royalties and milestone payments. We recognize a liability (and related research and development expense) for each milestone if and when such milestone is probable and can be reasonably estimated. As typical in the biotechnology industry, each milestone has its own unique risks that we evaluate when determining the probability of achieving each milestone and the probability of success evolves over time as the programs progress and additional information is obtained. We consider numerous factors when evaluating whether a given milestone is probable including (but not limited to) the regulatory pathway, development plan, ability to dedicate sufficient funding to reach a given milestone and the probability of success.
Previous wording
The Company estimates its expenses resulting from its obligations under contracts with vendors, clinical research organizations and consultants and under clinical site agreements in connection with conducting clinical trials. The financial terms of these contracts are subject to negotiations, which vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided under such contracts. The Company’s objective is to reflect the appropriate trial expenses in its financial statements by matching those expenses with the period in which services are performed and efforts are expended. The Company accounts for these expenses according to the progress of the trial as measured by subject progression and the timing of various aspects of the trial. The Company determines accrual estimates by taking into account discussions with applicable personnel and outside service providers as to the progress or state of consummation of trials, or the services completed. During the course of a clinical trial, the Company adjusts its clinical expense recognition if actual results differ from its estimates. The Company makes estimates of its accrued expenses as of each balance sheet date based on the facts and circumstances known to it at that time. The Company’s clinical trial accruals are dependent upon the timely and accurate reporting of contract research organizations and other third‑party vendors. Although the Company does not expect its estimates to be materially different from amounts actually incurred, its understanding of the status and timing of services performed relative to the actual status and timing of services performed might vary and might result in it reporting amounts that are too high or too low for any particular period.
Current wording
We estimate our expenses resulting from our obligations under contracts with vendors, clinical research organizations and consultants and under clinical site agreements in connection with conducting clinical trials. The financial terms of these contracts are subject to negotiations, which vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided under such contracts. Our objective is to reflect the appropriate trial expenses in our financial statements by matching those expenses with the period in which services are performed and efforts are expended. We account for these expenses according to the progress of the trial as measured by subject progression and the timing of various aspects of the trial. We determine accrual estimates by taking into account discussions with applicable personnel and outside service providers as to the progress or state of consummation of trials, or the services completed. During the course of a clinical trial, we adjust our clinical expense recognition if actual results differ from its estimates. We make estimates of our accrued expenses as of each balance sheet date based on the facts and circumstances known at that time. Our clinical trial accruals are dependent upon the timely and accurate reporting of contract research organizations and other third‑party vendors. Although we do not expect our estimates to be materially different from amounts actually incurred, our understanding of the status and timing of services performed relative to the actual status and timing of services performed might vary and might result in reporting amounts that are too high or too low for any particular period.
Previous wording
The Company does not have any off‑balance sheet arrangements, as defined by applicable SEC rules and regulations.
Current wording
We do not have any off‑balance sheet arrangements, as defined by applicable SEC rules and regulations.
Rearranged current paragraphs (1)
Current report — wording carried from elsewhere
Net cash (used in) provided by investing activities