GRAY MICHAEL

PrivateCIK: 1271411
Location

LEXINGTON, MA

GRAY MICHAEL (CFO and COO) sold 2.8% of their position (852.00 shares) of UPSTREAM BIO, INC. on the open market

Open‑market sale worth $7.9K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderGRAY MICHAELCIK 1271411
IssuerUPSTREAM BIO, INC.CIK 2022626
Officer· CFO and COO
Since Oct 2024
-852.00
Net shares
Net seller
$7.9K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
852.00 disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

852.00

Price / share

$9.29

Trade value

$7.92K

% of position

2.8%
3/16/2026
30.50K29.65K
Total

Net shares

852.00

Net value

-$7.92K

Derivative Transactions0
No derivative transactions reported
GRAY MICHAEL — Insider Transaction (Form 4) Filed Mar 17, 2026 | Finecho