Armstrong Mac sold $480K of PLMR (indirect holdings)
Armstrong Mac (CEO and Chairman) sold 3,500 indirectly-held shares of Palomar Holdings, Inc. (PLMR) at an average of $137.26 ($136.70–$139.43, $0.48M total) across 4 trades on 2026-07-21 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The newest disclosed fact is the CEO’s open-market sale amount and execution details, with no accompanying company performance or guidance update.
Market read
Traders may monitor PLMR for any follow-on insider activity, but this specific disclosure is unlikely to drive a fundamental repricing.
What to watch
The filing notes indirect holdings and multiple small lots; without context on total insider ownership changes over time, the signal strength is weak.
Background
The article is an SEC Form 4 insider transaction report for Palomar Holdings, Inc. (PLMR).
Ticker impact
Palomar CEO and Chairman Armstrong Mac sold $480,424 of PLMR shares via an open-market sale under a pre-arranged 10b5-1 plan on 2026-07-21.
Likely limited, short-lived sentiment impact; no clear directional catalyst from the filing alone.
The filing is a Form 4 insider transaction, explicitly tied to a pre-arranged 10b5-1 plan, with no accompanying company news, guidance, or operational update.
Market effects
Minimal, as the disclosure is company-specific and does not indicate sector-wide regulatory or demand changes.
None indicated.
None indicated.
Counterpoint
Because the sale is under a pre-arranged 10b5-1 plan, it may reflect scheduled liquidity needs rather than bearish expectations.
Key entities
- issuerPalomar Holdings, Inc.
Company whose shares were sold by an insider under a 10b5-1 plan.
- insiderArmstrong Mac
CEO and Chairman who executed the open-market sale.


