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UPB

Upstream Bio, Inc.

NASDAQ · Healthcare · Biotechnology · US

$5.34
+0.56%
Ask drillr
0
Insider buys (3m)
5
Insider sells (3m)
-$27.6K
Net value (3m)
-16.2%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Sep 17, 2026GRAY MICHAEL · officer: CFO and COOSale853$5.49
Sep 17, 2026Sutherland Everett Rand · director, officer: Chief Executive OfficerSale2,095$5.49
Sep 17, 2026Houghton Adam · officer: Chief Business OfficerSale700$5.49
Sep 17, 2026Deykin Aaron · officer: Chief Medical OfficerSale895$5.49
Sep 17, 2026Ambrose Allison · officer: General CounselSale485$5.49
Jun 17, 2026Houghton Adam · officer: Chief Business OfficerSale700$6.10
Jun 17, 2026Ambrose Allison · officer: General CounselSale477$6.10
Jun 17, 2026Deykin Aaron · officer: Chief Medical OfficerSale895$6.10
Jun 17, 2026Sutherland Everett Rand · director, officer: Chief Executive OfficerSale2,095$6.10
Jun 17, 2026GRAY MICHAEL · officer: CFO and COOSale853$6.10
Jun 11, 2026Renaud Ronald C JR · directorA-Award17,096$6.69
Jun 11, 2026Chimovits Erez · directorA-Award17,096$6.69
Jun 11, 2026Ratcliffe Liam · directorA-Award17,096$6.69
Jun 11, 2026Beckman Daniella · directorA-Award17,096$6.69
Jun 11, 2026Ruddy Marcella K. · directorA-Award17,096$6.69
Jun 11, 2026Fleming Harold Edward · directorA-Award17,096$6.69
Mar 17, 2026Sutherland Everett Rand · director, officer: Chief Executive OfficerSale2,093$9.29
Mar 17, 2026GRAY MICHAEL · officer: CFO and COOSale852$9.29
Mar 17, 2026Deykin Aaron · officer: Chief Medical OfficerSale894$9.29
Mar 17, 2026Ambrose Allison · officer: General CounselSale475$9.29
Mar 17, 2026Houghton Adam · officer: Chief Business OfficerSale699$9.29
Jan 6, 2026GRAY MICHAEL · officer: CFO and COOA-Award30,500$0.00
Jan 6, 2026Houghton Adam · officer: Chief Business OfficerA-Award75,000$27
Jan 6, 2026Ambrose Allison · officer: General CounselA-Award17,000$0.00
Jan 6, 2026Ambrose Allison · officer: General CounselA-Award51,000$27
Jan 6, 2026Deykin Aaron · officer: Chief Medical OfficerA-Award32,000$0.00
Jan 6, 2026Deykin Aaron · officer: Chief Medical OfficerA-Award96,000$27
Jan 6, 2026GRAY MICHAEL · officer: CFO and COOA-Award91,500$27
Jan 6, 2026Sutherland Everett Rand · director, officer: Chief Executive OfficerA-Award75,000$0.00
Jan 6, 2026Sutherland Everett Rand · director, officer: Chief Executive OfficerA-Award225,000$27
Institutional positioning

13F filings over the trailing two quarters

New 84Increased 115Reduced 66Sold out 27
FilerActionSharesFiled
FMR LLCIncreased8,162,897Aug 13, 2026
FMR LLCIncreased8,101,563May 15, 2026
ORBIMED ADVISORS LLCUnchanged5,693,589May 15, 2026
ORBIMED ADVISORS LLCUnchanged5,693,589Aug 14, 2026
NORGES BANKNew Position3,768,619Aug 12, 2026
BlackRock, Inc.Increased3,753,358Aug 7, 2026
BLACKROCK, INC.Increased3,370,689May 13, 2026
Decheng Capital LLCUnchanged2,724,868Aug 14, 2026
DECHENG CAPITAL LLCReduced2,724,868May 13, 2026
Enavate Sciences GP, LLCUnchanged2,459,703Aug 14, 2026
ENAVATE SCIENCES GP, LLCUnchanged2,459,703May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased1,876,734Aug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position1,873,574May 15, 2026
MILLENNIUM MANAGEMENT LLCIncreased1,143,775Aug 14, 2026
D. E. Shaw & Co., Inc.Increased1,036,044Aug 14, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Sep 17, 2026