Arkolith/Insider Trading/MACK/Form 4

Western Standard LLC

InsiderMERRIMACK PHARMACEUTICALS INC (MACK) · full profile →Form 4 · filed Nov 13, 2023
Net Buying
Open-Market Buys
$289K
Open-Market Sells
$0
Net Open-Market Flow
$289K
Transactions
4
4 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Nov 9, 2023Buy(P)8K$12.19$95K1.6M
Nov 9, 2023Buy(P)2K$12.19$26K437K
Nov 8, 2023Buy(P)9K$12.13$110K435K
Nov 8, 2023Buy(P)5K$12.13$58K1.6M

Transaction Codes

P
Open-market purchase

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000950170-23-062911) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML