Arkolith/Insider Trading/MCRB/Form 4

Henn Matthew R

See RemarksSeres Therapeutics, Inc. (MCRB) · full profile →Form 4 · filed Nov 18, 2025
Net Selling
Open-Market Buys
$0
Open-Market Sells
$22K
Net Open-Market Flow
-$22K
Transactions
7
4 non-derivative · 3 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Nov 15, 2025Sell(S)1K$17.30$22K8K
Nov 15, 2025Option exercise(M)98——9K
Nov 15, 2025Option exercise(M)4K——9K
Nov 15, 2025Option exercise(M)140——9K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Nov 15, 2025Option exercise(M)4K—$00
Nov 15, 2025Option exercise(M)140—$0704
Nov 15, 2025Option exercise(M)98—$0878

Transaction Codes

S
Open-market sale
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-25-286226) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML