Arkolith/Insider Trading/SEPN/Form 4

Third Rock Ventures V, L.P.

10% OwnerSepterna, Inc. (SEPN) · full profile →Form 4 · filed Aug 14, 2026
Net Buying
Open-Market Buys
$7.4M
Open-Market Sells
$0
Net Open-Market Flow
$7.4M
Transactions
2
2 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Aug 12, 2026Buy(S)147K$50.27$7.4M6.1M
Aug 12, 2026Buy(S)141$51.08$7K6.1M

Transaction Codes

S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-352692) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML

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