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Upstream Bio, Inc.

For the period ended Sep 30, 2026. Filed Nov 10, 2026.

View on SEC.gov

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 10, 2026

UPB$3.38-5.6%Stored close · as of Nov 10, 2026

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

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Condensed Consolidated Balance Sheets

(Amounts in thousands, except share and per share amounts)

September 30,December 31,
20262025
Assets
Current assets:
Cash and cash equivalents$47,416$101,578
Short-term investments159,949239,931
Accounts receivable395668
Prepaid expenses and other current assets36,8739,620
Total current assets244,633351,797
Property and equipment, net411559
Operating lease right-of-use assets7541,222
Restricted cash194194
Total assets$245,992$353,772
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable$2,385$2,726
Accrued expenses and other current liabilities8,84310,006
Operating lease liabilities, current portion732720
Total current liabilities11,96013,452
Operating lease liabilities, net of current portion57549
Total liabilities12,01714,001
Commitments and contingencies (Note 12)
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized at September 30, 2026 and December 31, 2025; no shares issued and outstanding at September 30, 2026 and December 31, 2025——
Common stock, $0.001 par value; 500,000,000 shares authorized at September 30, 2026 and December 31, 2025; 54,811,391 and 54,237,750 shares issued and outstanding at September 30, 2026 and December 31, 2025, respectively5454
Additional paid-in capital689,956673,410
Accumulated other comprehensive income (loss)(327)530
Accumulated deficit(455,708)(334,223)
Total stockholders’ equity233,975339,771
Total liabilities and stockholders’ equity$245,992$353,772
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.