John C Thomas

Insider

First SEC filing: July 27, 2015 · Latest: Jan. 28, 2022

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) 0 sells (S) Net: $0 + 12 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

12 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 16, 2026	DWTX	A	16,800	—	—	16,800 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 10, 2020	IBRX	S 10b5-1	42,592	$10.83	$461,271	207,477 Direct	-17.03%	Disposed	-25.8% (price as of 2026-08-19)
Aug. 19, 2020	IBRX	S	20,000	$9.19	$183,800	250,069 Direct	-7.41%	Disposed	-12.5% (price as of 2026-08-19)
Aug. 13, 2020	IBRX	S	20,000	$9.34	$186,800	270,069 Direct	-6.89%	Disposed	-13.9% (price as of 2026-08-19)
Aug. 13, 2020	IBRX	S	20,000	$9.49	$189,800	290,069 Direct	-6.45%	Disposed	-15.3% (price as of 2026-08-19)
Aug. 11, 2020	IBRX	S	210	$10.55	$2,216	310,069 Direct	-0.07%	Disposed	-23.8% (price as of 2026-08-19)
Aug. 11, 2020	IBRX	S	19,790	$10.35	$204,826	310,279 Direct	-6.00%	Disposed	-22.3% (price as of 2026-08-19)
June 10, 2020	IBRX	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 16, 2019	IBRX	S 10b5-1	10,000	$3.14	$31,400	330,069 Direct	-2.94%	Disposed	156.1% (price as of 2026-08-19)
Dec. 13, 2019	IBRX	S 10b5-1	10,000	$2.98	$29,800	340,069 Direct	-2.86%	Disposed	169.8% (price as of 2026-08-19)
Dec. 13, 2019	IBRX	S 10b5-1	10,000	$2.48	$24,800	350,069 Direct	-2.78%	Disposed	224.2% (price as of 2026-08-19)
Dec. 12, 2019	IBRX	S 10b5-1	10,000	$1.99	$19,900	360,069 Direct	-2.70%	Disposed	304.0% (price as of 2026-08-19)
Sept. 9, 2019	IBRX	S	13,956	$1.24	$17,305	370,069 Direct	-3.63%	Disposed	548.4% (price as of 2026-08-19)
Sept. 6, 2019	IBRX	S	7,080	$1.24	$8,779	384,025 Direct	-1.81%	Disposed	548.4% (price as of 2026-08-19)
Sept. 5, 2019	IBRX	S	2,964	$1.25	$3,705	391,105 Direct	-0.75%	Disposed	543.2% (price as of 2026-08-19)
June 6, 2019	IBRX	A	92,592	—	—	394,069 Direct	+30.71%	Acquired	(price as of 2026-08-19)
June 7, 2018	IBRX	A	27,322	—	—	301,477 Direct	+9.97%	Acquired	(price as of 2026-08-19)
Jan. 2, 2018	IBRX	G	4,500	—	—	274,155 Direct	-1.61%	Disposed	(price as of 2026-08-19)
June 20, 2017	IBRX	S 10b5-1	10,000	$7.54	$75,400	278,655 Direct	-3.46%	Disposed	6.6% (price as of 2026-08-19)
June 20, 2017	IBRX	S 10b5-1	20,000	$7.44	$148,800	288,655 Direct	-6.48%	Disposed	8.1% (price as of 2026-08-19)
June 20, 2017	IBRX	S 10b5-1	10,000	$7.43	$74,300	308,655 Direct	-3.14%	Disposed	8.2% (price as of 2026-08-19)
June 9, 2017	IBRX	A	23,753	—	—	318,655 Direct	+8.05%	Acquired	(price as of 2026-08-19)
May 30, 2017	IBRX	G	12,500	—	—	294,902 Direct	-4.07%	Disposed	(price as of 2026-08-19)
Nov. 25, 2016	IBRX	S	6,168	$7.50	$46,260	309,621 Direct	-1.95%	Disposed	7.2% (price as of 2026-08-19)
Nov. 23, 2016	IBRX	S	7,719	$7.50	$57,892	315,070 Direct	-2.39%	Disposed	7.2% (price as of 2026-08-19)
Nov. 23, 2016	IBRX	S	7,000	$7.50	$52,500	315,789 Direct	-2.17%	Disposed	7.2% (price as of 2026-08-19)
Nov. 22, 2016	IBRX	S	13,000	$7.50	$97,500	322,789 Direct	-3.87%	Disposed	7.2% (price as of 2026-08-19)
May 26, 2016	IBRX	M	277,725	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
May 26, 2016	IBRX	M	277,725	$0.22	$61,100	335,789 Direct	+478.31%	Acquired	3554.5% (price as of 2026-08-19)
March 1, 2016	IBRX	G	16,000	—	—	58,064 Direct	-21.60%	Disposed	(price as of 2026-08-19)
Aug. 31, 2015	IBRX	G	2,775	—	—	74,064 Direct	-3.61%	Disposed	(price as of 2026-08-19)
Aug. 25, 2015	IBRX	G	15,736	—	—	76,839 Direct	-17.00%	Disposed	(price as of 2026-08-19)

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
June 16, 2026	DWTX	Stock Option (right to buy)	Common Stock (16,800)	$1.50	June 16, 2036	16,800	Acquired
June 10, 2020	IBRX	Stock Option (right to buy)	Common Stock (100,000)	$6.21	June 10, 2030	100,000	Acquired
May 26, 2016	IBRX	Stock Option (right to buy)	Common Stock (277,725)	$0.22	March 17, 2024	277,725	Disposed

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

Initial ownership (Form 3) 11 holdings

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

Date	Ticker	Security	Shares	Ownership
July 27, 2015	IBRX	Common Stock	92,575	Direct
July 27, 2015	IBRX	Stock Option (right to buy)→ Common Stock (277,725)	277,725	Direct
Feb. 15, 2008	MDXG	Common Stock	1,774,188	Direct
Feb. 15, 2008	MDXG	Common Stock	618,284	Indirect
Feb. 15, 2008	MDXG	Common Stock	1,236,568	Indirect
Feb. 15, 2008	MDXG	Common Stock	618,284	Indirect
Feb. 15, 2008	MDXG	Common Stock	30,914	Indirect
Feb. 15, 2008	MDXG	Common Stock	30,914	Indirect
Feb. 15, 2008	MDXG	Common Stock	30,914	Indirect
Feb. 15, 2008	MDXG	Common Stock	927,426	Indirect
Feb. 15, 2008	MDXG	Stock option→ Common Stock (61,828)	61,828	Direct