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HA

SEC Insider//CIK 0002031691

Houghton Adam

CIK 00020316911 companyWALTHAM, MA

Transactions

4

Companies

1

Filings

3

CIK

0002031691

Recent Transactions

4 trades

Sale
Upstream Bio, Inc.$UPB
Common Stock
2026-03-16$9.29/sh−699→ 24,301 total
Award
Upstream Bio, Inc.$UPB
Common Stock
2026-01-02+25,000→ 25,000 total
Award
Upstream Bio, Inc.$UPB
Stock Option (Right to Buy)
2026-01-02+75,000→ 75,000 total
Award
Upstream Bio, Inc.$UPB
Stock Option (Right to Buy)
2025-02-06+140,000→ 140,000 total

Companies

1

Upstream Bio, Inc.
Chief Business Officer
$UPB

Recent Filings

3

Address

UPSTREAM BIO, INC. 890 WINTER STREET, SUITE 200

WALTHAM, MA, 02451

View on SEC.gov