GRAY MICHAEL

PrivateCIK: 1271411
Location

LEXINGTON, MA

GRAY MICHAEL (CFO and COO) sold 3.0% of their position (853.00 shares) of UPSTREAM BIO, INC. on the open market

Open‑market sale worth $4.7K — 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
-853.00
Net shares
Net seller
$4.7K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
853.00 disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

−853.00

Price / share

$5.49

Trade value

$4.68K

% of position

3.0%
9/16/2026
28.80K→27.94K
Total

Net shares

−853.00

Net value

-$4.68K

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