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SEC Insider//CIK 0002031693

Deykin Aaron

CIK 00020316931 companyWALTHAM, MA

Transactions

4

Companies

1

Filings

3

CIK

0002031693

Recent Transactions

4 trades

Sale
Upstream Bio, Inc.$UPB
Common Stock
2026-03-16$9.29/sh−894→ 32,687 total
Award
Upstream Bio, Inc.$UPB
Common Stock
2026-01-02+32,000→ 33,581 total
Award
Upstream Bio, Inc.$UPB
Stock Option (Right to Buy)
2026-01-02+96,000→ 96,000 total
Award
Upstream Bio, Inc.$UPB
Stock Option (Right to Buy)
2025-02-06+165,000→ 165,000 total

Companies

1

Upstream Bio, Inc.
Chief Medical Officer
$UPB

Recent Filings

3

Address

UPSTREAM BIO, INC. 890 WINTER STREET, SUITE 200

WALTHAM, MA, 02451

View on SEC.gov