Mac Armstrong Insider Trading Activity

Corporate InsiderCEO · CIK 1772383

Total trades

$19.8M

Total volume

Jul 21, 2026

Last activity

PLMR

Palomar Holdings, Inc.

Mac Armstrong has been net-selling over the last 12 months with 0 purchases and 52 sales across 1 company.

PLMR is the most-traded position with 52 trades. The largest single transaction was a sale of PLMR for $7.6M on Jul 15, 2026.

Performance Scorecard

Forward stock performance after each transaction by Mac Armstrong. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	—	+1.2%	58%	53
90 days	—	+3.1%	55%	49
120 days	—	+2.5%	69%	45

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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PLMR · Palomar Holdings, Inc.

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Recent Trades

Showing the 50 most recent of 59 disclosed trades.

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
Jul 21, 2026	PLMR	Sell	260	$138.47	$36K	−0.1%	CEO
Jul 21, 2026	PLMR	Sell	937	$137.74	$129K	−0.3%	CEO
Jul 21, 2026	PLMR	Sell	2,103	$136.70	$287K	−0.6%	CEO
Jul 21, 2026	PLMR	Sell	200	$139.43	$28K	−0.1%	CEO
Jul 15, 2026	PLMR	Sell	57,544	$131.66	$7.6M	−26.4%	CEO
Jul 15, 2026	PLMR	Sell	3,197	$131.66	$421K	−3.0%	CEO
Jun 22, 2026	PLMR	Sell	2,005	$112.72	$226K	−0.6%	CEO
Jun 22, 2026	PLMR	Sell	1,495	$113.28	$169K	−0.5%	CEO
May 21, 2026	PLMR	Sell	2,172	$114.67	$249K	−0.6%	CEO
May 21, 2026	PLMR	Sell	1,328	$113.93	$151K	−0.4%	CEO
Apr 21, 2026	PLMR	Sell	1,622	$129.91	$211K	−0.5%	CEO
Apr 21, 2026	PLMR	Sell	678	$131.11	$89K	−0.2%	CEO
Apr 21, 2026	PLMR	Sell	1,200	$131.73	$158K	−0.4%	CEO
Apr 15, 2026	PLMR	Sell	3,197	$129.46	$414K	−3.0%	CEO
Mar 23, 2026	PLMR	Sell	500	$119.47	$60K	−0.1%	CEO
Mar 23, 2026	PLMR	Sell	400	$118.33	$47K	−0.1%	CEO
Mar 23, 2026	PLMR	Sell	1,622	$120.78	$196K	−0.5%	CEO
Mar 23, 2026	PLMR	Sell	978	$121.74	$119K	−0.3%	CEO
Feb 12, 2026	PLMR	Sell	1,308	$123.63	$162K	−0.4%	CEO
Feb 12, 2026	PLMR	Sell	1,023	$124.78	$128K	−0.3%	CEO
Feb 12, 2026	PLMR	Sell	100	$126.15	$13K	−0.0%	CEO
Feb 12, 2026	PLMR	Sell	423	$128.25	$54K	−0.1%	CEO
Feb 12, 2026	PLMR	Sell	300	$117.58	$35K	−0.1%	CEO
Feb 12, 2026	PLMR	Sell	1,100	$119.42	$131K	−0.3%	CEO
Feb 12, 2026	PLMR	Sell	500	$120.57	$60K	−0.1%	CEO
Feb 12, 2026	PLMR	Sell	246	$121.32	$30K	−0.1%	CEO
Jan 31, 2026	PLMR	Sell	2,205	$121.74	$268K	−2.2%	CEO
Jan 29, 2026	PLMR	Sell	2,939	$122.04	$359K	−2.9%	CEO
Jan 29, 2026	PLMR	Sell	2,460	$122.04	$300K	−2.5%	CEO
Jan 28, 2026	PLMR	Sell	11,484	$119.88	$1.4M	−11.1%	CEO
Jan 21, 2026	PLMR	Sell	1,655	$128.67	$213K	−0.5%	CEO
Jan 21, 2026	PLMR	Sell	1,048	$127.84	$134K	−0.3%	CEO
Jan 21, 2026	PLMR	Sell	2,256	$129.75	$293K	−0.6%	CEO
Jan 21, 2026	PLMR	Sell	41	$130.29	$5K	−0.0%	CEO
Jan 15, 2026 Filed 3d late	PLMR	Sell	2,310	$130.00	$300K	−2.8%	CEO
Dec 22, 2025	PLMR	Sell	11	$137.64	$2K	−0.0%	CEO
Dec 22, 2025	PLMR	Sell	800	$135.04	$108K	−0.2%	CEO
Dec 22, 2025	PLMR	Sell	2,432	$135.95	$331K	−0.7%	CEO
Dec 22, 2025	PLMR	Sell	1,757	$137.15	$241K	−0.5%	CEO
Nov 21, 2025	PLMR	Sell	876	$123.98	$109K	−0.2%	CEO
Nov 21, 2025	PLMR	Sell	3,124	$123.01	$384K	−0.9%	CEO
Nov 21, 2025	PLMR	Sell	700	$121.87	$85K	−0.2%	CEO
Nov 21, 2025	PLMR	Sell	300	$120.34	$36K	−0.1%	CEO
Oct 21, 2025	PLMR	Sell	2,900	$115.62	$335K	−0.8%	CEO
Oct 21, 2025	PLMR	Sell	63	$113.10	$7K	−0.0%	CEO
Oct 21, 2025	PLMR	Sell	2,037	$114.94	$234K	−0.5%	CEO
Oct 15, 2025	PLMR	Sell	3,218	$116.10	$374K	−4.0%	CEO
Sep 22, 2025	PLMR	Sell	2,700	$116.42	$314K	−0.7%	CEO
Sep 22, 2025	PLMR	Sell	2,300	$115.54	$266K	−0.6%	CEO
Aug 21, 2025	PLMR	Sell	1,000	$126.09	$126K	−0.3%	CEO