Charles K Gayer

Insider

First SEC filing: Jan. 21, 2020 · Latest: Dec. 23, 2025

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

BCRX buying May 13, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 24 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

24 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 22, 2025	BCRX	M	50,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 22, 2025	BCRX	M	10,091	—	—	17,409 Direct	-36.69%	Disposed	(price as of 2026-08-21)
Dec. 22, 2025	BCRX	M	14,142	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 22, 2025	BCRX	M	50,000	$5.51	$275,500	952,583 Direct	+5.54%	Acquired	78.1% (price as of 2026-08-21)
Dec. 22, 2025	BCRX	M	10,091	$5.04	$50,859	902,583 Direct	+1.13%	Acquired	94.7% (price as of 2026-08-21)
Dec. 22, 2025	BCRX	M	14,142	$3.22	$45,537	892,492 Direct	+1.61%	Acquired	204.8% (price as of 2026-08-21)
Dec. 19, 2025	BCRX	F	11,477	$7.41	$85,045	878,350 Direct	-1.29%	Disposed	32.5% (price as of 2026-08-21)
Dec. 17, 2025	BCRX	A	986,950	—	—	986,950 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 17, 2025	BCRX	A	471,000	—	—	889,827 Direct	+112.46%	Acquired	(price as of 2026-08-21)
Dec. 12, 2025	BCRX	F	8,181	$7.57	$61,930	418,827 Direct	-1.92%	Disposed	29.7% (price as of 2026-08-21)
Dec. 19, 2024	BCRX	A	260,950	—	—	260,950 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 19, 2024	BCRX	F	2,461	$7.39	$18,187	423,546 Direct	-0.58%	Disposed	32.8% (price as of 2026-08-21)
Dec. 19, 2024	BCRX	A	125,950	—	—	426,007 Direct	+41.98%	Acquired	(price as of 2026-08-21)
Dec. 14, 2024	BCRX	F	8,251	$7.53	$62,130	300,057 Direct	-2.68%	Disposed	30.3% (price as of 2026-08-21)
May 13, 2024	BCRX	P	30,000	$5.47	$164,100	307,533 Direct	+10.81%	Acquired	79.4% (price as of 2026-08-21)
Dec. 19, 2023	BCRX	F	2,482	$6.05	$15,016	274,533 Direct	-0.90%	Disposed	62.2% (price as of 2026-08-21)
Dec. 14, 2023	BCRX	A	158,500	—	—	158,500 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 14, 2023	BCRX	F	5,840	$6.43	$37,551	277,015 Direct	-2.06%	Disposed	52.6% (price as of 2026-08-21)
Dec. 14, 2023	BCRX	A	34,000	—	—	282,855 Direct	+13.66%	Acquired	(price as of 2026-08-21)
Dec. 19, 2022	BCRX	A	158,500	—	—	158,500 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 19, 2022	BCRX	A	34,000	—	—	245,610 Direct	+16.07%	Acquired	(price as of 2026-08-21)
Dec. 15, 2022	BCRX	S 10b5-1	6,100	$10.90	$66,490	211,610 Direct	-2.80%	Disposed	-10.0% (price as of 2026-08-21)
Dec. 14, 2021	BCRX	A	80,000	—	—	216,556 Direct	+58.58%	Acquired	(price as of 2026-08-21)
Dec. 14, 2021	BCRX	A	164,000	—	—	164,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 14, 2021	BCRX	A	125,000	—	—	261,556 Direct	+91.54%	Acquired	(price as of 2026-08-21)
Dec. 15, 2020	BCRX	A	190,000	—	—	190,000 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
Dec. 22, 2025	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (50,000)	$5.51	Feb. 27, 2027	50,000	Disposed
Dec. 22, 2025	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (10,091)	$5.04	Dec. 20, 2027	10,091	Disposed
Dec. 22, 2025	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (14,142)	$3.22	May 23, 2026	14,142	Disposed
Dec. 17, 2025	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (986,950)	$7.13	Dec. 17, 2035	986,950	Acquired
Dec. 19, 2024	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (260,950)	$7.39	Dec. 19, 2034	260,950	Acquired
Dec. 14, 2023	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (158,500)	$6.43	Dec. 14, 2033	158,500	Acquired
Dec. 19, 2022	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (158,500)	$10.63	Dec. 19, 2032	158,500	Acquired
Dec. 14, 2021	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (164,000)	$11.43	Dec. 14, 2031	164,000	Acquired
Dec. 15, 2020	BCRX	Emp. Stock Option (Right to Buy)	Common Stock (190,000)	$8.31	Dec. 15, 2030	190,000	Acquired

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. 21, 2020	BCRX	Common Stock	127,315	Direct
Jan. 21, 2020	BCRX	Emp. Stock Option (Right to Buy)→ Common Stock (75,000)	75,000	Direct
Jan. 21, 2020	BCRX	Emp. Stock Option (Right to Buy)→ Common Stock (6,837)	6,837	Direct
Jan. 21, 2020	BCRX	Emp. Stock Option (Right to Buy)→ Common Stock (14,142)	14,142	Direct
Jan. 21, 2020	BCRX	Emp. Stock Option (Right to Buy)→ Common Stock (50,000)	50,000	Direct
Jan. 21, 2020	BCRX	Emp. Stock Option (Right to Buy)→ Common Stock (27,500)	27,500	Direct
Jan. 21, 2020	BCRX	Emp. Stock Option (Right to Buy)→ Common Stock (65,000)	65,000	Direct
Jan. 21, 2020	BCRX	Emp. Stock Option (Right to Buy)→ Common Stock (106,000)	106,000	Direct

Compensation (DEF 14A)

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

BCRX

Chief Commercial Officer

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2022	$448,700	—	$361,420	$1,194,012	$179,480	—	$15,250	$2,198,862

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