Arkolith/Insider Trading/MACK/Form 4

Western Standard LLC

InsiderMERRIMACK PHARMACEUTICALS INC (MACK) · full profile →Form 4 · filed Jan 3, 2023
Net Buying
Open-Market Buys
$2.8M
Open-Market Sells
$0
Net Open-Market Flow
$2.8M
Transactions
4
4 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Dec 30, 2022Buy(P)8K$11.33$94K306K
Dec 30, 2022Buy(P)33K$11.33$374K1.2M
Dec 29, 2022Buy(P)29K$10.55$302K298K
Dec 29, 2022Buy(P)190K$10.55$2.0M1.2M

Transaction Codes

P
Open-market purchase

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000899243-23-000225) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML