Russell T. Ray, Director at MERRIMACK PHARMACEUTICALS INC (MACK), sold 1,000 shares at $3.84 ($4K) on 2021-12-31, disclosed to the SEC on 2022-01-04.
Open-market sale of $4k MACK by Director. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
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