Armstrong Mac, CEO and Chairman of PLMR, has filed 77 Form 4 transactions, all in a single company. The pattern is one-directional: he has sold on the open market 22 times in the recent window and has not recorded a single purchase, grant, or acquisition of shares. The total value of his sales across all filings is $20,458,534.50, with no buy-side activity to offset it.
The recent trades cluster on the 21st of each month, from April through October 2026, with additional activity on the 15th. The largest single sale occurred on July 15, 2026, when Mac disposed of shares worth $7,576,243.04, a figure that dwarfs the typical monthly transactions, which range from roughly $27,000 to $420,000. That same day, he also exercised options (coded M, valued at zero) and made two smaller sales, one for $420,917.02. The monthly rhythm suggests a scheduled disposition plan, not sporadic decision-making.
The direction is consistent. Every transaction in the recent list is a sale, with no buys, gifts, or conversions. The dollar amounts vary widely, but the cadence is steady: April, May, June, July, August, September, and October all show sales. The October 21 trades total $484,097.34 across three separate filings, the most recent activity on record. Mac has not added a single share to his holdings in this period; his Form 4 history is entirely a story of liquidation.
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