Arkolith/Insider Trading/UPB/Form 4

Gray Michael

CFO and COOUpstream Bio, Inc. (UPB) · full profile →Form 4 · filed Mar 17, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$8K
Net Open-Market Flow
-$8K
Transactions
1
1 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Mar 16, 2026Sell(S)852$9.29$8K30K

Transaction Codes

S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-111138) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML