Mac Armstrong

Insider

CEO and Chairman

Trades at: PLMR

30D 90D 1Y

Net shares · 365d

-45.1K

0 buy · 45.1K sell

Net value · 365d

-$5.6M

$0 in · $5.6M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 45.1K sell

Net buy / sell volume (all companies)

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions · open-market

Include grants & non-market

PLMR Sell·S
May 21, 26

CEO and Chairman · 10b5-1

$249.1K

2.2K sh · $114.67

Own -1%
PLMR Sell·S
May 21, 26

CEO and Chairman · 10b5-1

$151.3K

1.3K sh · $113.93

Own -0%
PLMR Sell·S
Apr 21, 26

CEO and Chairman · 10b5-1

$158.1K

1.2K sh · $131.73

Own -0%
PLMR Sell·S
Apr 21, 26

CEO and Chairman · 10b5-1

$88.9K

678 sh · $131.11

Own -0%
PLMR Sell·S
Apr 21, 26

CEO and Chairman · 10b5-1

$210.7K

1.6K sh · $129.91

Own -0%
PLMR Sell·S
Apr 15, 26

CEO and Chairman

$413.9K

3.2K sh · $129.46

Own -3%
PLMR Sell·S
Mar 23, 26

CEO and Chairman · 10b5-1

$119.1K

978 sh · $121.74

Own -0%
PLMR Sell·S
Mar 23, 26

CEO and Chairman · 10b5-1

$195.9K

1.6K sh · $120.78

Own -0%
PLMR Sell·S
Mar 23, 26

CEO and Chairman · 10b5-1

$59.7K

500 sh · $119.47

Own -0%
PLMR Sell·S
Mar 23, 26

CEO and Chairman · 10b5-1

$47.3K

400 sh · $118.33

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$54.3K

423 sh · $128.25

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$12.6K

100 sh · $126.15

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$127.6K

1.0K sh · $124.78

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$161.7K

1.3K sh · $123.63

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$29.8K

246 sh · $121.32

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$60.3K

500 sh · $120.57

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$131.4K

1.1K sh · $119.42

Own -0%
PLMR Sell·S
Feb 12, 26

CEO and Chairman · 10b5-1

$35.3K

300 sh · $117.58

Own -0%
PLMR Sell·S
Jan 31, 26

CEO and Chairman

$268.4K

2.2K sh · $121.74

Own -2%
PLMR Sell·S
Jan 29, 26

CEO and Chairman

$358.7K

2.9K sh · $122.04

Own -3%
PLMR Sell·S
Jan 29, 26

CEO and Chairman

$300.2K

2.5K sh · $122.04

Own -3%
PLMR Sell·S
Jan 28, 26

CEO and Chairman

$1.4M

11.5K sh · $119.88

Own -11%
PLMR Sell·S
Jan 21, 26

CEO and Chairman · 10b5-1

$5.3K

41 sh · $130.29

Own -0%
PLMR Sell·S
Jan 21, 26

CEO and Chairman · 10b5-1

$292.7K

2.3K sh · $129.75

Own -1%
PLMR Sell·S
Jan 21, 26

CEO and Chairman · 10b5-1

$212.9K

1.7K sh · $128.67

Own -0%
PLMR Sell·S
Jan 21, 26

CEO and Chairman · 10b5-1

$134.0K

1.0K sh · $127.84

Own -0%
PLMR Sell·S
Jan 15, 26

CEO and Chairman

$300.3K

2.3K sh · $130.00

Own -3%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
May 21, 2026	PLMR	CEO and Chairman	Sell S	2.2K	-1%	$114.67	$249.1K
May 21, 2026	PLMR	CEO and Chairman	Sell S	1.3K	-0%	$113.93	$151.3K
Apr 21, 2026	PLMR	CEO and Chairman	Sell S	1.2K	-0%	$131.73	$158.1K
Apr 21, 2026	PLMR	CEO and Chairman	Sell S	678	-0%	$131.11	$88.9K
Apr 21, 2026	PLMR	CEO and Chairman	Sell S	1.6K	-0%	$129.91	$210.7K
Apr 15, 2026	PLMR	CEO and Chairman	Sell S	3.2K	-3%	$129.46	$413.9K
Mar 23, 2026	PLMR	CEO and Chairman	Sell S	978	-0%	$121.74	$119.1K
Mar 23, 2026	PLMR	CEO and Chairman	Sell S	1.6K	-0%	$120.78	$195.9K
Mar 23, 2026	PLMR	CEO and Chairman	Sell S	500	-0%	$119.47	$59.7K
Mar 23, 2026	PLMR	CEO and Chairman	Sell S	400	-0%	$118.33	$47.3K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	423	-0%	$128.25	$54.3K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	100	-0%	$126.15	$12.6K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	1.0K	-0%	$124.78	$127.6K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	1.3K	-0%	$123.63	$161.7K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	246	-0%	$121.32	$29.8K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	500	-0%	$120.57	$60.3K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	1.1K	-0%	$119.42	$131.4K
Feb 12, 2026	PLMR	CEO and Chairman	Sell S	300	-0%	$117.58	$35.3K
Jan 31, 2026	PLMR	CEO and Chairman	Sell S	2.2K	-2%	$121.74	$268.4K
Jan 29, 2026	PLMR	CEO and Chairman	Sell S	2.9K	-3%	$122.04	$358.7K
Jan 29, 2026	PLMR	CEO and Chairman	Sell S	2.5K	-3%	$122.04	$300.2K
Jan 28, 2026	PLMR	CEO and Chairman	Sell S	11.5K	-11%	$119.88	$1.4M
Jan 21, 2026	PLMR	CEO and Chairman	Sell S	41	-0%	$130.29	$5.3K
Jan 21, 2026	PLMR	CEO and Chairman	Sell S	2.3K	-1%	$129.75	$292.7K
Jan 21, 2026	PLMR	CEO and Chairman	Sell S	1.7K	-0%	$128.67	$212.9K
Jan 21, 2026	PLMR	CEO and Chairman	Sell S	1.0K	-0%	$127.84	$134.0K
Jan 15, 2026	PLMR	CEO and Chairman	Sell S	2.3K	-3%	$130.00	$300.3K

About Mac Armstrong

This profile aggregates every SEC Form 4 insider transaction reported by Mac Armstrong across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.