Gavan C M Duff

Insider

First SEC filing: June 2, 2017 · Latest: June 2, 2017

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 8 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 8, 2018	MSA	A	269	—	—	4,148 Direct	+6.93%	Acquired	(price as of 2026-08-20)
March 8, 2018	MSA	F	77	$84.78	$6,528	4,071 Direct	-1.86%	Disposed	122.4% (price as of 2026-08-20)
March 8, 2018	MSA	F	86	$84.78	$7,291	3,985 Direct	-2.11%	Disposed	122.4% (price as of 2026-08-20)
March 8, 2018	MSA	F	172	$84.78	$14,582	3,813 Direct	-4.32%	Disposed	122.4% (price as of 2026-08-20)
Feb. 23, 2018	MSA	A	520	—	—	3,879 Direct	+15.48%	Acquired	(price as of 2026-08-20)
March 8, 2017	MSA	F	31	$70.10	$2,173	3,082 Direct	-1.00%	Disposed	168.9% (price as of 2026-08-20)
March 8, 2017	MSA	F	49	$70.10	$3,435	3,033 Direct	-1.59%	Disposed	168.9% (price as of 2026-08-20)
Feb. 28, 2017	MSA	A	900	—	—	3,113 Direct	+40.67%	Acquired	(price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
June 2, 2017	MSA	Common Stock, no par value	2,539	Direct
March 6, 2017	MSA	Common Stock, no par value	2,213	Direct
March 6, 2017	MSA	Non-statutory Stock Option→ Common Stock, no par value (2,903)	2,903	Direct
March 6, 2017	MSA	Non-statutory Stock Option→ Common Stock, no par value (1,925)	1,925	Direct