Rachel Humphrey

Insider

First SEC filing: Oct. 21, 2021 · Latest: Oct. 21, 2021

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

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 19 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

19 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 24, 2026	PYXS	A	45,867	—	—	45,867 Direct	—	Acquired	(price as of 2026-08-21)
April 21, 2025	PYXS	S 10b5-1	13,896	$1.03	$14,313	81,309 Direct	-14.60%	Disposed	206.3% (price as of 2026-08-21)
April 17, 2025	PYXS	S 10b5-1	200	$0.97	$194	95,205 Direct	-0.21%	Disposed	225.3% (price as of 2026-08-21)
April 14, 2025	PYXS	S 10b5-1	1,400	$0.97	$1,358	95,405 Direct	-1.45%	Disposed	225.3% (price as of 2026-08-21)
March 31, 2025	PYXS	A	36,979	$0.98	$36,239	36,979 Direct	—	Acquired	221.9% (price as of 2026-08-21)
March 26, 2024	PYXS	A	38,741	—	—	96,805 Direct	+66.72%	Acquired	(price as of 2026-08-21)
March 24, 2023	PYXS	A	58,064	—	—	58,064 Direct	—	Acquired	(price as of 2026-08-21)
Aug. 11, 2022	PYXS	A	236,220	—	—	236,220 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 17, 2021	BDTX	A	60,000	—	—	60,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 8, 2020	BDTX	A	150,000	—	—	150,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 8, 2020	BDTX	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-21)
March 2, 2018	CTMX	M	16,160	—	—	222,980 Direct	-6.76%	Disposed	(price as of 2026-08-21)
March 2, 2018	CTMX	S 10b5-1	16,160	$30.00	$484,800	30,234 Direct	-34.83%	Disposed	-88.7% (price as of 2026-08-21)
March 2, 2018	CTMX	M	16,160	$6.61	$106,818	46,394 Direct	+53.45%	Acquired	-48.9% (price as of 2026-08-21)
Feb. 28, 2018	CTMX	M	23,840	—	—	239,140 Direct	-9.07%	Disposed	(price as of 2026-08-21)
Feb. 28, 2018	CTMX	S 10b5-1	23,840	$30.00	$715,200	30,234 Direct	-44.09%	Disposed	-88.7% (price as of 2026-08-21)
Feb. 28, 2018	CTMX	M	23,840	$6.61	$157,582	54,074 Direct	+78.85%	Acquired	-48.9% (price as of 2026-08-21)
Jan. 24, 2018	CTMX	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 15, 2017	CTMX	M	15,117	—	—	262,980 Direct	-5.44%	Disposed	(price as of 2026-08-21)
Dec. 15, 2017	CTMX	M	15,117	$6.61	$99,923	30,234 Direct	+100.00%	Acquired	-48.9% (price as of 2026-08-21)
Jan. 25, 2017	CTMX	A	120,000	—	—	120,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 28, 2016	CTMX	M	15,117	—	—	278,097 Direct	-5.16%	Disposed	(price as of 2026-08-21)
Dec. 28, 2016	CTMX	M	15,117	$6.61	$99,923	15,117 Direct	—	Acquired	-48.9% (price as of 2026-08-21)
Jan. 21, 2016	CTMX	A	65,000	—	—	65,000 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.

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
March 24, 2026	PYXS	Stock Option (Right to Buy)	Common Stock (45,867)	$1.36	March 24, 2036	45,867	Acquired
March 31, 2025	PYXS	Stock Option (Right to Buy)	Common Stock (36,979)	$0.98	March 31, 2035	36,979	Acquired
Aug. 11, 2022	PYXS	Stock Option (Right to Buy)	Common Stock (236,220)	$2.91	Aug. 11, 2032	236,220	Acquired
Feb. 17, 2021	BDTX	Stock Option (Right to Buy)	Common Stock (60,000)	$28.69	Feb. 16, 2031	60,000	Acquired
Sept. 8, 2020	BDTX	Stock Option (Right to Buy)	Common Stock (150,000)	$28.14	Sept. 8, 2030	150,000	Acquired
March 2, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (16,160)	$6.61	Aug. 27, 2025	16,160	Disposed
Feb. 28, 2018	CTMX	Stock Option (Right to Buy)	Common Stock (23,840)	$6.61	Aug. 27, 2025	23,840	Disposed
Jan. 24, 2018	CTMX	Stock Option (right to buy)	Common Stock (100,000)	$25.82	Jan. 23, 2028	100,000	Acquired
Dec. 15, 2017	CTMX	Stock Option (Right to Buy)	Common Stock (15,117)	$6.61	Aug. 27, 2025	15,117	Disposed
Jan. 25, 2017	CTMX	Stock Option (right to buy)	Common Stock (120,000)	$11.94	Jan. 24, 2027	120,000	Acquired
Dec. 28, 2016	CTMX	Stock Option (Right to Buy)	Common Stock (15,117)	$6.61	Aug. 27, 2025	15,117	Disposed
Jan. 21, 2016	CTMX	Employee Stock Option (right to buy)	Common Stock (65,000)	$14.46	Jan. 20, 2016	65,000	Acquired

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

Initial ownership (Form 3) 5 holdings

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

Date	Ticker	Security	Shares	Ownership
Oct. 21, 2021	XLO	Common Stock	9,444	Direct
Oct. 21, 2021	XLO	Stock Option (right to buy)→ Common Stock (14,239)	14,239	Direct
Oct. 21, 2021	XLO	Stock Option (right to buy)→ Common Stock (34,450)	34,450	Direct
Oct. 7, 2015	CTMX	Employee Stock Option (right to buy)→ Common Stock (49,208)	49,208	Direct
Oct. 7, 2015	CTMX	Employee Stock Option (right to buy)→ Common Stock (293,214)	293,214	Direct

Compensation (DEF 14A)

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

CTMX

SVP

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2019	$289,761	—	—	$858,654	—	—	$833,897	$1,871,354

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