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Spero Therapeutics, Inc.

For the period ended Dec 31, 2025. Filed Mar 26, 2026.

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About 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 26, 2026

SPRO$1.07+3.9%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Consolidated Balance Sheets

(In thousands, except unit, share and per share amounts)

December 31,December 31,
20252024
Assets
Current assets:
Cash and cash equivalents$40,265$52,889
Collaboration receivable, current - related party25,35949,391
Other receivables283,085
Prepaid expenses and other current assets1,6341,911
Total current assets67,286107,276
Operating lease right-of-use assets1,4803,114
Other assets153153
Total assets$68,919$110,543
Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable$693$7,306
Accrued expenses and other current liabilities5,57817,724
Operating lease liabilities1,9561,746
Income taxes payable383174
Deferred revenue, current—368
Deferred revenue, current - related party25821,756
Total current liabilities8,86849,074
Non-current operating lease liabilities9392,551
Deferred revenue, non-current—12,219
Deferred revenue, non-current - related party—576
Other long-term liabilities91—
Total liabilities9,89864,420
Commitments and contingencies (Note 11)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized, no shares issued and outstanding as of December 31, 2025 and 2024——
Common stock, $0.001 par value; 120,000,000 shares authorized as of December 31, 2025 and 2024; 56,414,657 shares issued and outstanding as of December 31, 2025 and 54,593,527 shares issued and outstanding as of December 31, 20245655
Additional paid-in capital510,031505,706
Accumulated deficit(451,066)(459,638)
Total stockholders' equity59,02146,123
Total liabilities and stockholders' equity$68,919$110,543
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.