Richard Nigon

Insider

First SEC filing: June 9, 2026 · Latest: June 9, 2026

On this page

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

Insider transactions

0 buys (P) 1 sells (S) Net: $-96,000 + 22 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

22 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 20, 2026	NTIC	M	12,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
July 20, 2026	NTIC	S	12,000	$8.00	$96,000	47,148 Direct	-20.29%	Disposed	0.6% (price as of 2026-08-20)
July 20, 2026	NTIC	M	12,000	$6.70	$80,400	59,148 Direct	+25.45%	Acquired	20.1% (price as of 2026-08-20)
June 5, 2026	CELC	A	1,530	—	—	80,565 Direct	+1.94%	Acquired	(price as of 2026-08-20)
April 9, 2026	CELC	G	10,000	—	—	79,035 Direct	-11.23%	Disposed	(price as of 2026-08-20)
Dec. 15, 2025	CELC	G	19,975	—	—	89,035 Direct	-18.32%	Disposed	(price as of 2026-08-20)
Sept. 11, 2025	CELC	X	3,245	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 11, 2025	CELC	X	4,672	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 11, 2025	CELC	X	3,245	$7.56	$24,532	109,010 Direct	+3.07%	Acquired	1116.5% (price as of 2026-08-20)
Sept. 11, 2025	CELC	X	4,672	$7.56	$35,320	105,765 Direct	+4.62%	Acquired	1116.5% (price as of 2026-08-20)
Sept. 1, 2025	NTIC	A	8,086	—	—	47,148 Direct	+20.70%	Acquired	(price as of 2026-08-20)
July 24, 2025	NTIC	M	12,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
July 24, 2025	NTIC	F	10,873	$8.20	$89,159	39,062 Direct	-21.77%	Disposed	-1.8% (price as of 2026-08-20)
July 24, 2025	NTIC	M	12,000	$7.43	$89,160	49,935 Direct	+31.63%	Acquired	8.3% (price as of 2026-08-20)
June 10, 2024	CELC	X	5,061	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 10, 2024	CELC	X	5,061	$9.50	$48,080	101,093 Direct	+5.27%	Acquired	868.1% (price as of 2026-08-20)
June 4, 2024	CELC	A	8,153	—	—	8,153 Direct	—	Acquired	(price as of 2026-08-20)
May 15, 2023	CELC	A	11,645	—	—	11,645 Direct	—	Acquired	(price as of 2026-08-20)
May 12, 2021	CELC	A	4,619	—	—	4,619 Direct	—	Acquired	(price as of 2026-08-20)
May 14, 2020	CELC	A	25,308	—	—	25,308 Direct	—	Acquired	(price as of 2026-08-20)
May 16, 2019	CELC	A	5,054	—	—	5,054 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 11, 2018	CELC	P	9,747	$22.31	$217,456	90,278 Direct	+12.10%	Acquired	312.2% (price as of 2026-08-20)
May 31, 2018	CELC	P	10,000	$19.04	$190,400	80,531 Direct	+14.18%	Acquired	383.0% (price as of 2026-08-20)
May 14, 2018	CELC	A	3,201	—	—	3,201 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 28, 2017	CELC	P	7,500	$17.48	$131,100	70,531 Direct	+11.90%	Acquired	426.1% (price as of 2026-08-20)
Nov. 21, 2017	CELC	P	1,000	$18.15	$18,150	63,031 Direct	+1.61%	Acquired	406.7% (price as of 2026-08-20)
Nov. 20, 2017	CELC	P	7,500	$17.20	$129,000	62,031 Direct	+13.75%	Acquired	434.7% (price as of 2026-08-20)
Oct. 19, 2017	CELC	A	8,200	—	—	8,200 Direct	—	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.

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
July 20, 2026	NTIC	Stock Option (right to buy)	Common Stock (12,000)	$6.70	Aug. 31, 2026	12,000	Disposed
Sept. 11, 2025	CELC	Warrants (right to buy)	Common Stock (3,245)	$7.56	May 2, 2026	3,245	Disposed
Sept. 11, 2025	CELC	Warrants (right to buy)	Common Stock (4,672)	$7.56	Jan. 14, 2026	4,672	Disposed
July 24, 2025	NTIC	Stock Option (right to buy)	Common Stock (12,000)	$7.43	Aug. 31, 2025	12,000	Disposed
June 10, 2024	CELC	Warrants (right to buy)	Common Stock (5,061)	$9.50	Sept. 22, 2024	5,061	Disposed
June 4, 2024	CELC	Stock Option (right to buy)	Common Stock (8,153)	$14.83	June 4, 2034	8,153	Acquired
May 15, 2023	CELC	Stock Option (right to buy)	Common Stock (11,645)	$9.58	May 15, 2033	11,645	Acquired
May 12, 2021	CELC	Stock Option (right to buy)	Common Stock (4,619)	$26.99	May 12, 2031	4,619	Acquired
May 14, 2020	CELC	Stock Option (right to buy)	Common Stock (25,308)	$5.10	May 14, 2030	25,308	Acquired
May 16, 2019	CELC	Stock Option (right to buy)	Common Stock (5,054)	$22.45	May 16, 2029	5,054	Acquired
May 14, 2018	CELC	Stock Option (right to buy)	Common Stock (3,201)	$19.45	May 14, 2028	3,201	Acquired
Oct. 19, 2017	CELC	Stock Option (right to buy)	Common Stock (8,200)	$16.23	Oct. 19, 2027	8,200	Acquired

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

Initial ownership (Form 3) 12 holdings

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

Date	Ticker	Security	Shares	Ownership
Sept. 19, 2017	CELC	Common Stock	54,531	Direct
Sept. 19, 2017	CELC	Common Stock	20,300	Indirect
Sept. 19, 2017	CELC	Warrants (right to buy)→ Common Stock (4,672)	4,672	Direct
Sept. 19, 2017	CELC	Warrants (right to buy)→ Common Stock (3,245)	3,245	Direct
Sept. 19, 2017	CELC	Warrants (right to buy)→ Common Stock (8,461)	8,461	Direct
Sept. 19, 2017	CELC	Warrants (right to buy)→ Common Stock (1,429)	1,429	Direct
Sept. 19, 2017	CELC	Warrants (right to buy)→ Common Stock (5,061)	5,061	Direct
July 27, 2016	TCMD	Common Stock	3,323	Direct
July 27, 2016	TCMD	Common Stock	66,469	Indirect
July 27, 2016	TCMD	Series B Preferred Stock→ Common Stock (5,719)	5,719	Indirect
July 27, 2016	TCMD	Stock Option (Right to Buy)→ Common Stock (6,101)	6,101	Direct
Feb. 2, 2010	NTIC	Common Stock	0	Direct