UPB earnings date, and what happened the last 4 times

Next report

Wed Nov 4

Quality Score today -10

Before the open, in 9 days. Expected: the company has not confirmed it.

UPB closed higher after 2 of its last 4 reports. On average it closed -0.3% the session after a report.

The moment UPB reports

Its figures, in plain words
How it moves after, beside its last four
Its Quality Score going in, and after

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What happened after UPB's last 4 reports

UPB's last 4 earnings reports
Reported	Score going in	Gap	Reaction	5 sessions
Aug 11, 20262026 · Before open	3estimated	+0.5%	-4.7%	-4.0%
May 13, 20262026 · Before open	0estimated	+0.1%	+4.6%	-10.3%
Mar 26, 20262026 · Before open	0estimated	+0.1%	+3.4%	-1.7%
Nov 5, 20252025 · Before open	8estimated	+1.6%	-4.3%	-5.0%

Aug 11, 2026, before the open: that session UPB opened +0.5% and closed -4.7%, and five sessions on it stood -4.0%. Its Quality Score going in was 3 (Below Average), estimated.
May 13, 2026, before the open: that session UPB opened +0.1% and closed +4.6%, and five sessions on it stood -10.3%. Its Quality Score going in was 0 (Below Average), estimated.
Mar 26, 2026, before the open: that session UPB opened +0.1% and closed +3.4%, and five sessions on it stood -1.7%. Its Quality Score going in was 0 (Below Average), estimated.
Nov 5, 2025, before the open: that session UPB opened +1.6% and closed -4.3%, and five sessions on it stood -5.0%. Its Quality Score going in was 8 (Average), estimated.

Across these 4 reports UPB opened higher after 4 of 4 and closed higher after 2 of 4; on average it opened +0.6%, closed -0.3%, and stood -5.3% five sessions on. Its Quality Score is -10 today, against 3 going into its Aug 11, 2026 report.

Gap: where the stock opened the session after the report. Reaction: where that session closed. Both against the close before the report. The largest of the 4: -4.7% after the Aug 11, 2026 report. A score marked estimated was worked out afterwards from that day's prices and filings; Breakaway has recorded every score live since Sep 9 2026.

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Questions about UPB's earnings

As of Oct 26, 2026: Upstream Bio (UPB): expected to report Wed Nov 4, before the open. UPB closed higher after 2 of its last 4 reports. Its Quality Score is -10 (Poor). Scores as of 10:16 PM ET, 15 minutes behind.

When is UPB's next earnings date?

Expected to report Wed Nov 4, before the open, a date Breakaway expects from the company's usual timing; the company has not confirmed it. UPB closed higher after 2 of its last 4 reports. Past behavior, not a forecast.

Does UPB report before or after the market?

UPB is expected to report Wed Nov 4, before the open. Its last 4 reports came before the open.

How did UPB stock react to its last earnings report?

Aug 11, 2026, before the open: that session UPB opened +0.5% and closed -4.7%, and five sessions on it stood -4.0%.

Does UPB stock usually go up after earnings?

UPB closed higher after 2 of its last 4 reports. On average it closed -0.3% the session after a report, after opening +0.6%. Past behavior, not a forecast.

Upstream Bio's page has its Quality Score, its chart, and its insiders' trades. Everyone reporting beside it: next week's earnings.