Upstream Bio, Inc.
For the period ended Mar 31, 2026. Filed May 13, 2026.
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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.
Mar 31, 2026 · Filed May 13, 2026
UPB$3.38-5.6%Stored close · as of Nov 10, 2026
Extracted filing text, with the paragraph anchors used by the comparison.
See the whole filing, with its images and exhibitsContents
Condensed Consolidated Statement of Stockholders’ Equity
(Amounts in thousands, except share amounts)
| Common Stock · Additional Paid-in · Accumulated · AccumulatedOther Comprehensive · Total Stockholders' | ||||||
|---|---|---|---|---|---|---|
| Shares | Amount | Capital | Deficit | Income (Loss) | Equity | |
| Balances at December 31, 2024 | 53,603,398 | $53 | $660,604 | $(190,780) | $(25) | $469,852 |
| Issuance of common stock upon exercise of stock options | 37,497 | — | — | — | — | — |
| Stock-based compensation expense | — | — | 2,635 | — | — | 2,635 |
| Unrealized gain on available-for-sale securities, net of tax | — | — | — | — | 393 | 393 |
| Net loss | — | — | — | (27,270) | — | (27,270) |
| Balances at March 31, 2025 | 53,640,895 | $53 | $663,239 | $(218,050) | $368 | $445,610 |
Condensed consoli dated statement of stockholders’ equity
(Amounts in thousands, except share amounts)
| Common Stock · Additional Paid-in · Accumulated · AccumulatedOther Comprehensive · Total Stockholders' | ||||||
|---|---|---|---|---|---|---|
| Shares | Amount | Capital | Deficit | Income | Equity | |
| Balances at December 31, 2025 | 54,237,750 | $54 | $673,410 | $(334,223) | $530 | $339,771 |
| Issuance of common stock upon exercise of stock options | 159,331 | — | 598 | — | — | 598 |
| Vesting of restricted stock units | 22,905 | — | — | — | — | — |
| Stock-based compensation expense | — | — | 4,647 | — | — | 4,647 |
| Unrealized loss on available-for-sale securities, net of tax | — | — | — | — | (430) | (430) |
| Net loss | — | — | — | (40,591) | — | (40,591) |
| Balances at March 31, 2026 | 54,419,986 | $54 | $678,655 | $(374,814) | $100 | $303,995 |
The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.