Sean A. Mccarthy

Insider

First SEC filing: Oct. 7, 2015 · Latest: Feb. 12, 2018

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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

CTMX selling March 16, 2023

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 63 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

63 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 16, 2023	CTMX	S	7,121	$1.88	$13,387	388,821 Direct	-1.80%	Disposed	86.2% (price as of 2026-08-20)
July 5, 2018	CTMX	M 10b5-1	4,497	—	—	155,649 Direct	-2.81%	Disposed	(price as of 2026-08-20)
July 5, 2018	CTMX	S 10b5-1	4,497	$25.06	$112,695	82,063 Direct	-5.20%	Disposed	-86.0% (price as of 2026-08-20)
July 5, 2018	CTMX	M 10b5-1	4,497	$1.57	$7,060	86,560 Direct	+5.48%	Acquired	122.9% (price as of 2026-08-20)
July 3, 2018	CTMX	M 10b5-1	2,028	—	—	160,146 Direct	-1.25%	Disposed	(price as of 2026-08-20)
July 3, 2018	CTMX	S 10b5-1	2,028	$25.09	$50,883	82,063 Direct	-2.41%	Disposed	-86.1% (price as of 2026-08-20)
July 3, 2018	CTMX	M 10b5-1	2,028	$1.57	$3,184	84,091 Direct	+2.47%	Acquired	122.9% (price as of 2026-08-20)
July 2, 2018	CTMX	M 10b5-1	13,052	—	—	162,174 Direct	-7.45%	Disposed	(price as of 2026-08-20)
July 2, 2018	CTMX	S 10b5-1	13,052	$23.42	$305,678	82,063 Direct	-13.72%	Disposed	-85.1% (price as of 2026-08-20)
July 2, 2018	CTMX	M 10b5-1	13,052	$1.57	$20,492	95,115 Direct	+15.90%	Acquired	122.9% (price as of 2026-08-20)
May 31, 2018	CTMX	A	302	$17.90	$5,406	4,945 Direct	+6.50%	Acquired	-80.4% (price as of 2026-08-20)
May 1, 2018	CTMX	M 10b5-1	19,578	—	—	175,226 Direct	-10.05%	Disposed	(price as of 2026-08-20)
May 1, 2018	CTMX	S 10b5-1	19,578	$26.55	$519,796	4,643 Direct	-80.83%	Disposed	-86.8% (price as of 2026-08-20)
May 1, 2018	CTMX	M 10b5-1	19,578	$1.57	$30,737	24,221 Direct	+421.67%	Acquired	122.9% (price as of 2026-08-20)
March 1, 2018	CTMX	M	62	—	—	66,752 Direct	-0.09%	Disposed	(price as of 2026-08-20)
March 1, 2018	CTMX	M	9,000	—	—	328,143 Direct	-2.67%	Disposed	(price as of 2026-08-20)
March 1, 2018	CTMX	M	10,516	—	—	194,804 Direct	-5.12%	Disposed	(price as of 2026-08-20)
March 1, 2018	CTMX	S 10b5-1	19,578	$29.43	$576,181	4,643 Direct	-80.83%	Disposed	-88.1% (price as of 2026-08-20)
March 1, 2018	CTMX	M	62	$0.94	$58	24,221 Direct	+0.26%	Acquired	272.3% (price as of 2026-08-20)
March 1, 2018	CTMX	M	9,000	$1.13	$10,170	24,159 Direct	+59.37%	Acquired	209.7% (price as of 2026-08-20)
March 1, 2018	CTMX	M	10,516	$1.57	$16,510	15,159 Direct	+226.49%	Acquired	122.9% (price as of 2026-08-20)
Jan. 24, 2018	CTMX	A	300,000	—	—	300,000 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 5, 2018	CTMX	M	6,526	—	—	337,143 Direct	-1.90%	Disposed	(price as of 2026-08-20)
Jan. 5, 2018	CTMX	S 10b5-1	6,526	$25.01	$163,215	4,643 Direct	-58.43%	Disposed	-86.0% (price as of 2026-08-20)
Jan. 5, 2018	CTMX	M	6,526	$1.13	$7,374	11,169 Direct	+140.56%	Acquired	209.7% (price as of 2026-08-20)
Jan. 2, 2018	CTMX	M	13,052	—	—	343,669 Direct	-3.66%	Disposed	(price as of 2026-08-20)
Jan. 2, 2018	CTMX	S 10b5-1	13,052	$21.04	$274,614	4,643 Direct	-73.76%	Disposed	-83.4% (price as of 2026-08-20)
Jan. 2, 2018	CTMX	M	13,052	$1.13	$14,749	17,695 Direct	+281.11%	Acquired	209.7% (price as of 2026-08-20)
Dec. 1, 2017	CTMX	M	10,240	—	—	356,721 Direct	-2.79%	Disposed	(price as of 2026-08-20)
Dec. 1, 2017	CTMX	M	4,100	—	—	115,193 Direct	-3.44%	Disposed	(price as of 2026-08-20)
Dec. 1, 2017	CTMX	S 10b5-1	14,340	$20.60	$295,404	4,643 Direct	-75.54%	Disposed	-83.0% (price as of 2026-08-20)
Dec. 1, 2017	CTMX	M	10,240	$1.13	$11,571	18,983 Direct	+117.12%	Acquired	209.7% (price as of 2026-08-20)
Dec. 1, 2017	CTMX	M	4,100	$0.94	$3,854	8,743 Direct	+88.30%	Acquired	272.3% (price as of 2026-08-20)
Nov. 30, 2017	CTMX	A	398	$12.15	$4,836	4,643 Direct	+9.38%	Acquired	-71.2% (price as of 2026-08-20)
Nov. 1, 2017	CTMX	M	14,342	—	—	119,293 Direct	-10.73%	Disposed	(price as of 2026-08-20)
Nov. 1, 2017	CTMX	S 10b5-1	14,342	$19.86	$284,832	4,245 Direct	-77.16%	Disposed	-82.4% (price as of 2026-08-20)
Nov. 1, 2017	CTMX	M	14,342	$0.94	$13,481	18,587 Direct	+337.86%	Acquired	272.3% (price as of 2026-08-20)
Oct. 4, 2017	CTMX	M	19,120	—	—	133,635 Direct	-12.52%	Disposed	(price as of 2026-08-20)
Oct. 4, 2017	CTMX	S 10b5-1	19,120	$24.13	$461,366	4,245 Direct	-81.83%	Disposed	-85.5% (price as of 2026-08-20)
Oct. 4, 2017	CTMX	M	19,120	$0.94	$17,973	23,365 Direct	+450.41%	Acquired	272.3% (price as of 2026-08-20)
Oct. 2, 2017	CTMX	M	9,562	—	—	15,481 Direct	-38.18%	Disposed	(price as of 2026-08-20)
Oct. 2, 2017	CTMX	S 10b5-1	9,562	$18.57	$177,566	4,245 Direct	-69.25%	Disposed	-81.2% (price as of 2026-08-20)
Oct. 2, 2017	CTMX	M	9,562	$0.94	$8,988	13,807 Direct	+225.25%	Acquired	272.3% (price as of 2026-08-20)
Sept. 1, 2017	CTMX	M	9,930	—	—	25,043 Direct	-28.39%	Disposed	(price as of 2026-08-20)
Sept. 1, 2017	CTMX	S 10b5-1	368	$17.50	$6,440	4,245 Direct	-7.98%	Disposed	-80.0% (price as of 2026-08-20)
Sept. 1, 2017	CTMX	S 10b5-1	9,562	$17.32	$165,614	4,613 Direct	-67.46%	Disposed	-79.8% (price as of 2026-08-20)
Sept. 1, 2017	CTMX	M	9,930	$0.94	$9,334	14,175 Direct	+233.92%	Acquired	272.3% (price as of 2026-08-20)
Sept. 1, 2017	CTMX	M	9,930	$0.94	$9,334	14,175 Direct	+233.92%	Acquired	272.3% (price as of 2026-08-20)
Sept. 1, 2017	CTMX	S 10b5-1	9,930	$17.32	$171,988	4,245 Direct	-70.05%	Disposed	-79.8% (price as of 2026-08-20)
Sept. 1, 2017	CTMX	M	9,930	—	—	25,043 Direct	-28.39%	Disposed	(price as of 2026-08-20)
Aug. 31, 2017	CTMX	M	18,756	—	—	34,973 Direct	-34.91%	Disposed	(price as of 2026-08-20)
Aug. 31, 2017	CTMX	S 10b5-1	9,194	$17.50	$160,895	4,245 Direct	-68.41%	Disposed	-80.0% (price as of 2026-08-20)
Aug. 31, 2017	CTMX	S 10b5-1	3,000	$17.51	$52,530	13,439 Direct	-18.25%	Disposed	-80.0% (price as of 2026-08-20)
Aug. 31, 2017	CTMX	S 10b5-1	6,562	$17.50	$114,835	16,439 Direct	-28.53%	Disposed	-80.0% (price as of 2026-08-20)
Aug. 31, 2017	CTMX	M	18,756	$0.94	$17,631	23,001 Direct	+441.84%	Acquired	272.3% (price as of 2026-08-20)
Aug. 31, 2017	CTMX	M	18,756	—	—	34,973 Direct	-34.91%	Disposed	(price as of 2026-08-20)
Aug. 31, 2017	CTMX	S 10b5-1	3,000	$17.51	$52,530	4,245 Direct	-41.41%	Disposed	-80.0% (price as of 2026-08-20)
Aug. 31, 2017	CTMX	S 10b5-1	15,756	$17.50	$275,730	7,245 Direct	-68.50%	Disposed	-80.0% (price as of 2026-08-20)
Aug. 31, 2017	CTMX	M	18,756	$0.94	$17,631	23,001 Direct	+441.84%	Acquired	272.3% (price as of 2026-08-20)
Aug. 9, 2017	CTMX	M	4,781	—	—	53,729 Direct	-8.17%	Disposed	(price as of 2026-08-20)
Aug. 9, 2017	CTMX	S 10b5-1	4,781	$15.00	$71,715	4,245 Direct	-52.97%	Disposed	-76.7% (price as of 2026-08-20)
Aug. 9, 2017	CTMX	M	4,781	$0.94	$4,494	9,026 Direct	+112.63%	Acquired	272.3% (price as of 2026-08-20)
July 3, 2017	CTMX	M	4,781	—	—	58,510 Direct	-7.55%	Disposed	(price as of 2026-08-20)
July 3, 2017	CTMX	S 10b5-1	4,781	$15.52	$74,201	4,245 Direct	-52.97%	Disposed	-77.4% (price as of 2026-08-20)
July 3, 2017	CTMX	M	4,781	$0.94	$4,494	9,026 Direct	+112.63%	Acquired	272.3% (price as of 2026-08-20)
June 26, 2017	CTMX	M	4,481	—	—	63,291 Direct	-6.61%	Disposed	(price as of 2026-08-20)
June 26, 2017	CTMX	S 10b5-1	4,481	$15.00	$67,215	4,245 Direct	—	Acquired	-76.7% (price as of 2026-08-20)
June 26, 2017	CTMX	M	4,481	$0.94	$4,212	8,726 Direct	+105.56%	Acquired	272.3% (price as of 2026-08-20)
June 5, 2017	CTMX	M	300	—	—	67,772 Direct	-0.44%	Disposed	(price as of 2026-08-20)
June 5, 2017	CTMX	S 10b5-1	300	$15.00	$4,500	4,245 Direct	-6.60%	Disposed	-76.7% (price as of 2026-08-20)
June 5, 2017	CTMX	M	300	$0.94	$282	4,545 Direct	+7.07%	Acquired	272.3% (price as of 2026-08-20)
May 31, 2017	CTMX	A	2,266	$8.68	$19,669	4,245 Direct	+114.50%	Acquired	-59.7% (price as of 2026-08-20)
May 1, 2017	CTMX	M	4,781	$0.94	$4,494	6,760 Direct	+241.59%	Acquired	272.3% (price as of 2026-08-20)
May 1, 2017	CTMX	S 10b5-1	4,781	$15.70	$75,062	1,979 Direct	-70.72%	Disposed	-77.7% (price as of 2026-08-20)
May 1, 2017	CTMX	M	4,781	—	—	68,072 Direct	-6.56%	Disposed	(price as of 2026-08-20)
April 4, 2017	CTMX	M	4,781	—	—	72,853 Direct	-6.16%	Disposed	(price as of 2026-08-20)
April 4, 2017	CTMX	S 10b5-1	4,781	$17.50	$83,668	1,979 Direct	-70.72%	Disposed	-80.0% (price as of 2026-08-20)
April 4, 2017	CTMX	M	4,781	$0.94	$4,494	6,760 Direct	+241.59%	Acquired	272.3% (price as of 2026-08-20)
April 3, 2017	CTMX	M	4,781	—	—	77,634 Direct	-5.80%	Disposed	(price as of 2026-08-20)
April 3, 2017	CTMX	S 10b5-1	4,781	$16.94	$80,990	1,979 Direct	-70.72%	Disposed	-79.3% (price as of 2026-08-20)
April 3, 2017	CTMX	M	4,781	$0.94	$4,494	6,760 Direct	+241.59%	Acquired	272.3% (price as of 2026-08-20)
March 20, 2017	CTMX	M	14,343	—	—	82,415 Direct	-14.82%	Disposed	(price as of 2026-08-20)
March 20, 2017	CTMX	S 10b5-1	14,343	$19.60	$281,123	1,979 Direct	-87.88%	Disposed	-82.1% (price as of 2026-08-20)
March 20, 2017	CTMX	M	14,343	$0.94	$13,482	16,322 Direct	+724.76%	Acquired	272.3% (price as of 2026-08-20)
March 3, 2017	CTMX	M	14,343	—	—	366,961 Direct	-3.76%	Disposed	(price as of 2026-08-20)
March 3, 2017	CTMX	S 10b5-1	14,343	$15.00	$215,145	1,979 Direct	-87.88%	Disposed	-76.7% (price as of 2026-08-20)
March 3, 2017	CTMX	M	14,343	$1.13	$16,208	16,322 Direct	+724.76%	Acquired	209.7% (price as of 2026-08-20)
Jan. 25, 2017	CTMX	A	310,000	—	—	310,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 30, 2016	CTMX	A	1,979	$9.10	$18,009	1,979 Direct	—	Acquired	-61.5% (price as of 2026-08-20)
Sept. 26, 2016	CTMX	A	122,424	—	—	122,424 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 26, 2016	CTMX	A	48,379	—	—	48,379 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 21, 2016	CTMX	A	225,000	—	—	225,000 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 5, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (4,497)	$1.57	Feb. 8, 2025	4,497	Disposed
July 3, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (2,028)	$1.57	Feb. 8, 2025	2,028	Disposed
July 2, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (13,052)	$1.57	Feb. 8, 2025	13,052	Disposed
May 1, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (19,578)	$1.57	Feb. 8, 2025	19,578	Disposed
March 1, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (62)	$0.94	Feb. 25, 2023	62	Disposed
March 1, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (9,000)	$1.13	Sept. 20, 2021	9,000	Disposed
March 1, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (10,516)	$1.57	Feb. 8, 2025	10,516	Disposed
Jan. 24, 2018	CTMX	Stock Option (right to buy)	Common Stock (300,000)	$25.82	Jan. 23, 2028	300,000	Acquired
Jan. 5, 2018	CTMX	Stock Option (right to buy)	Common Stock (6,526)	$1.13	Sept. 20, 2021	6,526	Disposed
Jan. 2, 2018	CTMX	Stock Option (right to buy)	Common Stock (13,052)	$1.13	Sept. 20, 2021	13,052	Disposed
Dec. 1, 2017	CTMX	Stock Option (right to buy)	Common Stock (10,240)	$1.13	Sept. 20, 2021	10,240	Disposed
Dec. 1, 2017	CTMX	Stock Option (right to buy)	Common Stock (4,100)	$0.94	Feb. 25, 2023	4,100	Disposed
Nov. 1, 2017	CTMX	Stock Option (right to buy)	Common Stock (14,342)	$0.94	Feb. 25, 2023	14,342	Disposed
Oct. 4, 2017	CTMX	Common Stock	Common Stock (19,120)	$0.94	Feb. 25, 2023	19,120	Disposed
Oct. 2, 2017	CTMX	Stock Option (right to buy)	Common Stock (9,562)	$0.94	Feb. 25, 2023	9,562	Disposed
Sept. 1, 2017	CTMX	Stock Option (right to buy)	Common Stock (9,930)	$0.94	Feb. 25, 2023	9,930	Disposed
Sept. 1, 2017	CTMX	Stock Option (right to buy)	Common Stock (9,930)	$0.94	Feb. 25, 2023	9,930	Disposed
Aug. 31, 2017	CTMX	Stock Option (right to buy)	Common Stock (18,756)	$0.94	Feb. 25, 2023	18,756	Disposed
Aug. 31, 2017	CTMX	Stock Option (right to buy)	Common Stock (18,756)	$0.94	Feb. 25, 2023	18,756	Disposed
Aug. 9, 2017	CTMX	Stock Option (right to buy)	Common Stock (4,781)	$0.94	Feb. 25, 2023	4,781	Disposed
July 3, 2017	CTMX	Stock Option (right to buy)	Common Stock (4,781)	$0.94	Feb. 25, 2023	4,781	Disposed
June 26, 2017	CTMX	Stock Option (right to buy)	Common Stock (4,481)	$0.94	Feb. 25, 2023	4,481	Disposed
June 5, 2017	CTMX	Stock Option (right to buy)	Common Stock (300)	$0.94	Feb. 25, 2023	300	Disposed
May 1, 2017	CTMX	Stock Option (right to buy)	Common Stock (4,781)	$0.94	Feb. 25, 2023	4,781	Disposed
April 4, 2017	CTMX	Stock Option (right to buy)	Common Stock (4,781)	$0.94	Feb. 25, 2023	4,781	Disposed
April 3, 2017	CTMX	Stock Option (right to buy)	Common Stock (4,781)	$0.94	Feb. 25, 2023	4,781	Disposed
March 20, 2017	CTMX	Stock Option (Right to Buy)	Common Stock (14,343)	$0.94	Feb. 25, 2023	14,343	Disposed
March 3, 2017	CTMX	Stock Option (Right to Buy)	Common Stock (14,343)	$1.13	Sept. 20, 2021	14,343	Disposed
Jan. 25, 2017	CTMX	Stock Option (right to buy)	Common Stock (310,000)	$11.94	Jan. 24, 2027	310,000	Acquired
Sept. 26, 2016	CTMX	Stock Option (Right to Buy)	Common Stock (122,424)	$1.57	Feb. 8, 2025	122,424	Acquired
Sept. 26, 2016	CTMX	Stock Option (Right to Buy)	Common Stock (48,379)	$0.94	Feb. 25, 2023	48,379	Acquired
Jan. 21, 2016	CTMX	Employee Stock Option (right to buy)	Common Stock (225,000)	$14.46	Jan. 20, 2016	225,000	Acquired

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

Initial ownership (Form 3) 6 holdings

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

Date	Ticker	Security	Shares	Ownership
Oct. 7, 2015	CTMX	Common Stock	158,737	Indirect
Oct. 7, 2015	CTMX	Employee Stock Option (right to buy)→ Common Stock (381,304)	381,304	Direct
Oct. 7, 2015	CTMX	Employee Stock Option (right to buy)→ Common Stock (137,274)	137,274	Direct
Oct. 7, 2015	CTMX	Employee Stock Option (right to buy)→ Common Stock (48,379)	48,379	Direct
Oct. 7, 2015	CTMX	Employe Stock Option (right to buy)→ Common Stock (205,320)	205,320	Direct
Oct. 7, 2015	CTMX	Employee Stock Option (right to buy)→ Common Stock (438,302)	438,302	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

CTMX

CEO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2025	$675,290	—	$1,150,463	$2,158,170	$749,572	—	$5,000	$4,738,495
2024	$675,290	—	$588,000	$484,512	—	—	$5,000	$1,752,802
2023	$652,088	—	$1,048,950	$533,201	$371,899	—	$5,000	$2,611,138

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.