Howard G. Welgus

Insider

First SEC filing: Jan. 30, 2020 · Latest: June 17, 2026

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

ARQT selling Aug. 17, 2026

Insider transactions

0 buys (P) 4 sells (S) Net: $-367,398 + 23 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

23 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 17, 2026	ARQT	M 10b5-1	822	$6.52	$5,359	37,931 Direct	+2.22%	Acquired	285.3% (price as of 2026-08-21)
Aug. 17, 2026	ARQT	M 10b5-1	1,019	$7.51	$7,653	38,950 Direct	+2.69%	Acquired	234.5% (price as of 2026-08-21)
Aug. 17, 2026	ARQT	M 10b5-1	2,255	$8.63	$19,461	41,205 Direct	+5.79%	Acquired	191.1% (price as of 2026-08-21)
Aug. 17, 2026	ARQT	S 10b5-1	4,730	$26.18	$123,831	36,475 Direct	-11.48%	Disposed	-4.0% (price as of 2026-08-21)
Aug. 17, 2026	ARQT	M 10b5-1	822	—	—	7,396 Direct	-10.00%	Disposed	(price as of 2026-08-21)
Aug. 17, 2026	ARQT	M 10b5-1	1,019	—	—	9,163 Direct	-10.01%	Disposed	(price as of 2026-08-21)
Aug. 17, 2026	ARQT	M	2,255	—	—	20,287 Direct	-10.00%	Disposed	(price as of 2026-08-21)
July 15, 2026	ARQT	M 10b5-1	2,255	—	—	22,542 Direct	-9.09%	Disposed	(price as of 2026-08-21)
July 15, 2026	ARQT	M 10b5-1	1,019	—	—	10,182 Direct	-9.10%	Disposed	(price as of 2026-08-21)
July 15, 2026	ARQT	M 10b5-1	822	—	—	8,218 Direct	-9.09%	Disposed	(price as of 2026-08-21)
July 15, 2026	ARQT	S 10b5-1	4,730	$26.91	$127,284	37,109 Direct	-11.31%	Disposed	-6.7% (price as of 2026-08-21)
July 15, 2026	ARQT	M 10b5-1	2,255	$8.63	$19,461	41,839 Direct	+5.70%	Acquired	191.1% (price as of 2026-08-21)
July 15, 2026	ARQT	M 10b5-1	1,019	$7.51	$7,653	39,584 Direct	+2.64%	Acquired	234.5% (price as of 2026-08-21)
July 15, 2026	ARQT	M 10b5-1	822	$6.52	$5,359	38,565 Direct	+2.18%	Acquired	285.3% (price as of 2026-08-21)
June 17, 2026	ARQT	S 10b5-1	635	$25.67	$16,300	37,743 Direct	-1.65%	Disposed	-2.1% (price as of 2026-08-21)
June 15, 2026	ARQT	M 10b5-1	2,255	—	—	24,797 Direct	-8.34%	Disposed	(price as of 2026-08-21)
June 15, 2026	ARQT	M 10b5-1	1,019	—	—	11,201 Direct	-8.34%	Disposed	(price as of 2026-08-21)
June 15, 2026	ARQT	M 10b5-1	822	—	—	9,040 Direct	-8.34%	Disposed	(price as of 2026-08-21)
June 15, 2026	ARQT	S 10b5-1	4,096	$24.41	$99,983	38,378 Direct	-9.64%	Disposed	2.9% (price as of 2026-08-21)
June 15, 2026	ARQT	M 10b5-1	2,255	$8.63	$19,461	42,474 Direct	+5.61%	Acquired	191.1% (price as of 2026-08-21)
June 15, 2026	ARQT	M 10b5-1	1,019	$7.51	$7,653	40,219 Direct	+2.60%	Acquired	234.5% (price as of 2026-08-21)
June 15, 2026	ARQT	M 10b5-1	822	$6.52	$5,359	39,200 Direct	+2.14%	Acquired	285.3% (price as of 2026-08-21)
June 5, 2026	ARQT	A	5,778	—	—	38,378	—	—	(price as of 2026-08-21)
Dec. 23, 2021	ARQT	M	2,500	—	—	17,606 Direct	-12.43%	Disposed	(price as of 2026-08-21)
Dec. 23, 2021	ARQT	S 10b5-1	2,500	$20.16	$50,400	181,896 Direct	-1.36%	Disposed	24.6% (price as of 2026-08-21)
Dec. 23, 2021	ARQT	M 10b5-1	2,500	$0.58	$1,450	184,396 Direct	+1.37%	Acquired	4231.0% (price as of 2026-08-21)
Feb. 4, 2020	ARQT	C	24,991	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 4, 2020	ARQT	C	24,991	—	—	24,991 Indirect	—	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.

Derivative holdings (Form 4 Table II)

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Aug. 17, 2026	ARQT	Stock Option (right to buy)	Common Stock (822)	$6.52	Nov. 20, 2029	822	Disposed
Aug. 17, 2026	ARQT	Stock Option (right to buy)	Common Stock (1,019)	$7.51	May 31, 2033	1,019	Disposed
Aug. 17, 2026	ARQT	Stock Option (right to buy)	Common Stock (2,255)	$8.63	June 14, 2034	2,255	Disposed
July 15, 2026	ARQT	Stock Option (right to buy)	Common Stock (2,255)	$8.63	June 14, 2034	2,255	Disposed
July 15, 2026	ARQT	Stock Option (right to buy)	Common Stock (1,019)	$7.51	May 31, 2033	1,019	Disposed
July 15, 2026	ARQT	Stock Option (right to buy)	Common Stock (822)	$6.52	Nov. 20, 2029	822	Disposed
June 15, 2026	ARQT	Stock Option (right to buy)	Common Stock (2,255)	$8.63	June 14, 2034	2,255	Disposed
June 15, 2026	ARQT	Stock Option (right to buy)	Common Stock (1,019)	$7.51	May 31, 2033	1,019	Disposed
June 15, 2026	ARQT	Stock Option (right to buy)	Common Stock (822)	$6.52	Nov. 20, 2029	822	Disposed
Dec. 23, 2021	ARQT	Stock Option (Right to Buy)	Common Stock (2,500)	$0.58	June 13, 2028	2,500	Disposed
Feb. 4, 2020	ARQT	Series A Preferred Stock	Common Stock (24,991)	—	—	24,991	Disposed

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

Initial ownership (Form 3) 8 holdings

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

Date	Ticker	Security	Shares	Ownership
Jan. 30, 2020	ARQT	Common Stock	144,882	Direct
Jan. 30, 2020	ARQT	Series A Preferred Stock→ Common Stock (24,991)	24,991	Indirect
Jan. 30, 2020	ARQT	Stock Option (Right to Buy)→ Common Stock (42,770)	42,770	Direct
Jan. 30, 2020	ARQT	Stock Option (Right to Buy)→ Common Stock (18,743)	18,743	Direct
Jan. 30, 2020	ARQT	Stock Option (Right to Buy)→ Common Stock (18,743)	18,743	Direct
Jan. 30, 2020	ARQT	Stock Option (Right to Buy)→ Common Stock (37,486)	37,486	Direct
Jan. 30, 2020	ARQT	Stock Option (Right to Buy)→ Common Stock (49,982)	49,982	Direct
Jan. 30, 2020	ARQT	Stock Option (Right to Buy)→ Common Stock (14,994)	14,994	Direct