Linda J Welty

Insider

First SEC filing: June 2, 2026 · Latest: June 2, 2026

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 6 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

6 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 2, 2026	MERC	A	25,000	—	—	85,181 Direct	+41.54%	Acquired	(price as of 2026-08-21)
Aug. 18, 2025	MERC	P	10,000	$3.09	$30,900	36,290 Direct	+38.04%	Acquired	-86.2% (price as of 2026-08-21)
June 2, 2025	MERC	A	27,933	—	—	60,181 Direct	+86.62%	Acquired	(price as of 2026-08-21)
June 3, 2024	MERC	A	10,527	—	—	32,248 Direct	+48.46%	Acquired	(price as of 2026-08-21)
June 1, 2020	MERC	A	11,150	—	—	20,225 Direct	+122.87%	Acquired	(price as of 2026-08-21)
May 31, 2019	MERC	A	4,885	—	—	9,075 Direct	+116.59%	Acquired	(price as of 2026-08-21)
June 18, 2018	MERC	A	4,190	—	—	4,190 Direct	—	Acquired	(price as of 2026-08-21)

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.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
June 2, 2026	MERC	Deferred Stock Units [F1]	Common Stock [F1]	—	—	25,000	Acquired
June 2, 2025	MERC	Deferred Stock Units [F1]	Common Stock [F1]	—	—	27,933	Acquired
June 3, 2024	MERC	Deferred Stock Units [F1]	Common Stock [F1]	—	—	10,527	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

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

Date	Ticker	Security	Shares	Ownership
June 18, 2018	MERC	Common Stock	0	Direct