Arkolith/Insider Trading/MACK/Form 4/A

Western Standard LLC

InsiderMERRIMACK PHARMACEUTICALS INC (MACK) · full profile →Form 4/A · filed Mar 1, 2023
Net Buying
Open-Market Buys
$306K
Open-Market Sells
$0
Net Open-Market Flow
$306K
Transactions
4
4 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jan 31, 2023Buy(P)450$11.40$5K324K
Jan 31, 2023Buy(P)2K$11.40$20K1.3M
Jan 30, 2023Buy(P)20K$11.36$224K1.3M
Jan 30, 2023Buy(P)5K$11.36$57K324K

Transaction Codes

P
Open-market purchase

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4/A filing (accession 0000899243-23-006607) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4/A XML