Armstrong Mac sold $395K of PLMR (indirect holdings)
Armstrong Mac (CEO and Chairman) sold 3,500 indirectly-held shares of Palomar Holdings, Inc. (PLMR) at an average of $112.96 ($112.72–$113.28, $0.40M total) across 2 trades on 2026-06-22 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The newest actionable element is the disclosed sale size, price range, and confirmation of a pre-arranged 10b5-1 plan, which can influence short-term sentiment but usually not fundamentals.
Market read
This is a routine insider-sale disclosure; any trading impact is likely limited to sentiment/positioning rather than a new business catalyst.
What to watch
Traders may overreact to insider-sale headlines; the key nuance is the 10b5-1 structure and the relatively small dollar value versus typical institutional flows.
Background
The article is an SEC Form 4 insider transaction: Armstrong Mac (CEO and Chairman) sold Palomar Holdings shares on 2026-06-22 under a Rule 10b5-1 plan; the filing was made 2026-06-24.
Ticker impact
Palomar Holdings CEO/Chairman Armstrong Mac sold $395K of PLMR shares via a 10b5-1 plan on 2026-06-22 at ~$112.96 avg.
Low likelihood of sustained price impact; any effect is likely short-lived around filing/flow optics.
The disclosure is a Form 4 insider transaction with a pre-arranged 10b5-1 plan, which typically reduces interpretive weight versus discretionary selling.
Market effects
No sector-level implications; this is company-specific insider transaction disclosure.
None indicated.
None indicated.
Counterpoint
Because the sale is explicitly under a pre-arranged 10b5-1 plan, it may reflect scheduled liquidity rather than bearish expectations.
Key entities
- issuerPalomar Holdings, Inc.
Company whose shares were sold by its CEO/Chairman under a 10b5-1 plan.
- insiderArmstrong Mac
CEO and Chairman who executed the open-market sale; filing reports indirect holdings and post-transaction share count.


