Arkolith/Insider Trading/MCRB/Form 4

Shaff Eric D.

DirectorSeres Therapeutics, Inc. (MCRB) · full profile →Form 4 · filed Feb 18, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$2K
Net Open-Market Flow
-$2K
Transactions
4
2 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Feb 15, 2026Option exercise(M)723——12K
Feb 15, 2026Sell(S)259$8.47$2K12K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Feb 15, 2026Option exercise(M)391—$02K
Feb 15, 2026Option exercise(M)333—$03K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-057156) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML