Arkolith/Insider Trading/MCRB/Form 4

Shaff Eric D.

CEO and President, DirectorSeres Therapeutics, Inc. (MCRB) · full profile →Form 4 · filed May 19, 2025
Net Selling
Open-Market Buys
$0
Open-Market Sells
$2K
Net Open-Market Flow
-$2K
Transactions
5
3 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
May 16, 2025Sell(S)220$7.28$2K10K
May 15, 2025Option exercise(M)390——10K
May 15, 2025Option exercise(M)331——10K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
May 15, 2025Option exercise(M)331—$04K
May 15, 2025Option exercise(M)390—$03K

Transaction Codes

S
Open-market sale
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000950170-25-074327) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML