Shaff Eric D.

DirectorSeres Therapeutics, Inc. (MCRB) · full profile →Form 4 · filed Aug 18, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$1K
Net Open-Market Flow
-$1K
Transactions
4
2 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Aug 17, 2026Sell(S)263$4.55$1K12K
Aug 15, 2026Option exercise(M)72213K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Aug 15, 2026Option exercise(M)390$0783
Aug 15, 2026Option exercise(M)332$02K

Transaction Codes

S
Open-market sale
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-355722) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

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