Arkolith/Insider Trading/MACK/Form 4

Western Standard LLC

InsiderMERRIMACK PHARMACEUTICALS INC (MACK) · full profile →Form 4 · filed Mar 22, 2023
Net Buying
Open-Market Buys
$1.8M
Open-Market Sells
$0
Net Open-Market Flow
$1.8M
Transactions
2
2 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Mar 21, 2023Buy(P)127K$11.52$1.5M1.4M
Mar 21, 2023Buy(P)33K$11.52$382K358K

Transaction Codes

P
Open-market purchase

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000950170-23-009171) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML