Mac Armstrong is CEO & Chairman at Palomar Holdings, Inc. (PLMR). They have made 70 open-market trades across 1 company since 2019, most recently 2026-09-21.
CIK 0001772383
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 70 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PLMR | 318,888 | $44.5M |
Shares reported on the most recent Form 4, priced at the 2026-09-22 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PLMR | SELL | 2026-09-21 | 2026-09-22 | $134.98 | $472K | -3.8% | — | — |
| PLMR | SELL | 2026-08-21 | 2026-08-24 | $130.60 | $457K | +3.9% | -2.8% | — |
| PLMR | SELL | 2026-07-21 | 2026-07-22 | $137.26 | $480K | +5.3% | +0.3% | — |
| PLMR | SELL | 2026-07-15 | 2026-07-17 | $131.66 | $8.0M | +4.8% | -9.1% | +1.0% |
| PLMR | SELL | 2026-06-22 | 2026-06-24 | $112.96 | $395K | +23.0% | +16.5% | +11.3% |
| PLMR | SELL | 2026-05-21 | 2026-05-22 | $114.39 | $400K | -10.1% | -2.6% | +12.3% |
| PLMR | SELL | 2026-04-21 | 2026-04-22 | $130.77 | $458K | -11.1% | -12.5% | +4.8% |
| PLMR | SELL | 2026-04-15 | 2026-04-17 | $129.46 | $414K | -6.9% | -14.2% | +0.9% |
| PLMR | SELL | 2026-03-23 | 2026-03-25 | $120.39 | $725K | +3.0% | +3.8% | -4.1% |
| PLMR | SELL | 2026-02-12 | 2026-02-13 | $122.60 | $613K | -8.5% | -9.7% | -17.3% |
| PLMR | SELL | 2026-01-29 | 2026-02-02 | $121.96 | $927K | +3.5% | +1.4% | -5.7% |
| PLMR | SELL | 2026-01-28 | 2026-01-30 | $119.88 | $1.4M | +8.1% | +4.0% | -1.2% |
| PLMR | SELL | 2026-01-21 | 2026-01-22 | $129.00 | $645K | -4.1% | -5.0% | +1.5% |
| PLMR | SELL | 2026-01-15 | 2026-01-20 | $130.00 | $300K | -5.0% | -5.2% | +1.7% |
| PLMR | SELL | 2025-12-22 | 2025-12-23 | $136.33 | $1.3M | -4.5% | -6.6% | -12.0% |
| PLMR | SELL | 2025-11-21 | 2025-11-24 | $123.02 | $1.1M | -5.7% | +10.2% | -2.2% |
| PLMR | SELL | 2025-10-21 | 2025-10-22 | $115.20 | $811K | +0.6% | +8.6% | +15.5% |
| PLMR | SELL | 2025-10-15 | 2025-10-17 | $116.10 | $747K | -2.9% | +10.9% | +12.6% |
| PLMR | SELL · 10b5-1 | 2025-09-22 | 2025-09-24 | $116.02 | $580K | -3.4% | -3.1% | +17.5% |
| PLMR | SELL · 10b5-1 | 2025-08-21 | 2025-08-21 | $126.56 | $633K | -3.0% | -8.2% | -1.1% |
| PLMR | SELL | 2025-07-21 | 2025-07-22 | $140.10 | $1.1M | -5.9% | -7.9% | -16.4% |
| PLMR | SELL | 2025-07-15 | 2025-07-16 | $143.10 | $913K | -9.2% | -16.2% | -16.8% |
| PLMR | SELL | 2025-06-23 | 2025-06-25 | $158.14 | $1.6M | -5.4% | -12.1% | -23.0% |
| PLMR | SELL · 10b5-1 | 2025-05-21 | 2025-05-21 | $161.96 | $810K | +8.9% | -3.1% | -24.8% |
| PLMR | SELL | 2025-04-21 | 2025-04-23 | $145.67 | $1.0M | +3.0% | +7.6% | -8.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.