Michael Wayne Kalb

Insider

First SEC filing: Jan. 3, 2024 · Latest: Jan. 3, 2024

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

AMRN selling Dec. 16, 2019

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 51 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

51 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 15, 2026	CPRX	D	39,701	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	13,788	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	21,416	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	131,536	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	169,248	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	257,214	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	13,665	$31.50	$430,448	0 Direct	-100.00%	Disposed
Jan. 5, 2026	CPRX	M	7,139	—	—	632,903 Direct	-1.12%	Disposed
Jan. 5, 2026	CPRX	F	2,080	—	—	13,665 Direct	-13.21%	Disposed
Jan. 5, 2026	CPRX	M	7,139	—	—	15,745 Direct	+82.95%	Acquired
Nov. 21, 2025	CPRX	M	6,894	—	—	640,042 Direct	-1.07%	Disposed
Nov. 21, 2025	CPRX	F	2,485	—	—	8,606 Direct	-22.41%	Disposed
Nov. 21, 2025	CPRX	M	6,894	—	—	11,091 Direct	+164.26%	Acquired
Nov. 20, 2025	CPRX	A	39,701	—	—	646,936 Direct	+6.54%	Acquired
Nov. 20, 2025	CPRX	A	131,536	—	—	607,235 Direct	+27.65%	Acquired
Jan. 2, 2025	CPRX	M	7,138	—	—	475,699 Direct	-1.48%	Disposed
Jan. 2, 2025	CPRX	F	2,941	—	—	4,197 Direct	-41.20%	Disposed
Jan. 2, 2025	CPRX	M	7,138	—	—	7,138 Direct	—	Acquired
Nov. 21, 2024	CPRX	A	20,682	—	—	482,837 Direct	+4.48%	Acquired
Nov. 21, 2024	CPRX	A	169,248	—	—	462,155 Direct	+57.78%	Acquired
Dec. 16, 2019	AMRN	M	25,000	—	—	150,000 Direct	+20.00%	Acquired	(price as of 2026-08-19)
Dec. 16, 2019	AMRN	S 10b5-1	100	$25.66	$2,566	21,552 Direct	-0.46%	Disposed	-97.2% (price as of 2026-08-19)
Dec. 16, 2019	AMRN	S 10b5-1	1,000	$24.84	$24,840	21,652 Direct	-4.41%	Disposed	-97.1% (price as of 2026-08-19)
Dec. 16, 2019	AMRN	S 10b5-1	7,500	$23.81	$178,575	22,652 Direct	-24.87%	Disposed	-97.0% (price as of 2026-08-19)
Dec. 16, 2019	AMRN	S 10b5-1	16,400	$23.05	$378,020	30,152 Direct	-35.23%	Disposed	-96.9% (price as of 2026-08-19)
Dec. 16, 2019	AMRN	M	25,000	$2.19	$54,750	46,552 Direct	+116.00%	Acquired	-67.2% (price as of 2026-08-19)
July 1, 2019	AMRN	M	50,000	—	—	175,000 Direct	-22.22%	Disposed	(price as of 2026-08-19)
July 1, 2019	AMRN	S 10b5-1	50,000	$19.67	$983,500	20,840 Direct	-70.58%	Disposed	-96.3% (price as of 2026-08-19)
July 1, 2019	AMRN	M	50,000	$2.19	$109,500	70,840 Direct	+239.92%	Acquired	-67.2% (price as of 2026-08-19)
March 1, 2019	AMRN	M	31,000	—	—	86,000 Direct	-26.50%	Disposed	(price as of 2026-08-19)
March 1, 2019	AMRN	M	19,000	—	—	64,000 Direct	-22.89%	Disposed	(price as of 2026-08-19)
March 1, 2019	AMRN	M	50,000	—	—	225,000 Direct	-18.18%	Disposed	(price as of 2026-08-19)
March 1, 2019	AMRN	S 10b5-1	22,075	$22.59	$498,674	20,551 Direct	-51.79%	Disposed	-96.8% (price as of 2026-08-19)
March 1, 2019	AMRN	S 10b5-1	70,801	$22.06	$1,561,870	42,626 Direct	-62.42%	Disposed	-96.7% (price as of 2026-08-19)
March 1, 2019	AMRN	S 10b5-1	7,124	$20.89	$148,820	113,427 Direct	-5.91%	Disposed	-96.6% (price as of 2026-08-19)
March 1, 2019	AMRN	M	31,000	$3.80	$117,800	120,551 Direct	+34.62%	Acquired	-81.1% (price as of 2026-08-19)
March 1, 2019	AMRN	M	19,000	$2.95	$56,050	89,551 Direct	+26.93%	Acquired	-75.6% (price as of 2026-08-19)
March 1, 2019	AMRN	M	50,000	$2.19	$109,500	70,551 Direct	+243.30%	Acquired	-67.2% (price as of 2026-08-19)
Feb. 22, 2019	AMRN	M	50,000	—	—	83,000 Direct	-37.59%	Disposed	(price as of 2026-08-19)
Feb. 22, 2019	AMRN	S 10b5-1	50,000	$18.97	$948,500	20,551 Direct	-70.87%	Disposed	-96.2% (price as of 2026-08-19)
Feb. 22, 2019	AMRN	M	50,000	$2.95	$147,500	70,551 Direct	+243.30%	Acquired	-75.6% (price as of 2026-08-19)
Feb. 15, 2019	AMRN	S 10b5-1	25,000	$17.58	$439,500	20,551 Direct	-54.88%	Disposed	-95.9% (price as of 2026-08-19)
Feb. 1, 2019	AMRN	A	53,500	—	—	53,500 Direct	—	Acquired	(price as of 2026-08-19)
Feb. 1, 2019	AMRN	A	38,200	—	—	38,200 Direct	—	Acquired	(price as of 2026-08-19)
Jan. 31, 2019	AMRN	M	26,000	—	—	52,000 Direct	-33.33%	Disposed	(price as of 2026-08-19)
Jan. 31, 2019	AMRN	M	29,000	—	—	29,000 Direct	-50.00%	Disposed	(price as of 2026-08-19)
Jan. 31, 2019	AMRN	F	26,935	$16.94	$456,279	45,551 Direct	-37.16%	Disposed	-95.8% (price as of 2026-08-19)
Jan. 31, 2019	AMRN	M	26,000	—	—	72,486 Direct	+55.93%	Acquired	(price as of 2026-08-19)
Jan. 31, 2019	AMRN	M	29,000	—	—	46,486 Direct	+165.85%	Acquired	(price as of 2026-08-19)
Jan. 9, 2019	AMRN	M	200,000	—	—	275,000 Direct	-42.11%	Disposed	(price as of 2026-08-19)
Jan. 9, 2019	AMRN	S 10b5-1	200,000	$15.26	$3,052,000	17,486 Direct	-91.96%	Disposed	-95.3% (price as of 2026-08-19)
Jan. 9, 2019	AMRN	M	200,000	$2.19	$438,000	217,486 Direct	+1143.77%	Acquired	-67.2% (price as of 2026-08-19)
Sept. 24, 2018	AMRN	M	150,000	—	—	475,000 Direct	-24.00%	Disposed	(price as of 2026-08-19)
Sept. 24, 2018	AMRN	S 10b5-1	70,200	$10.72	$752,544	14,996 Direct	-82.40%	Disposed	-93.3% (price as of 2026-08-19)
Sept. 24, 2018	AMRN	S 10b5-1	79,800	$10.15	$809,970	85,196 Direct	-48.36%	Disposed	-92.9% (price as of 2026-08-19)
Sept. 24, 2018	AMRN	M	150,000	$2.19	$328,500	164,996 Direct	+1000.27%	Acquired	-67.2% (price as of 2026-08-19)
Feb. 1, 2018	AMRN	A	117,000	$3.80	$444,600	117,000 Direct	—	Acquired	-81.1% (price as of 2026-08-19)
Feb. 1, 2018	AMRN	A	78,000	—	—	78,000 Direct	—	Acquired	(price as of 2026-08-19)
Jan. 31, 2018	AMRN	M	29,000	—	—	58,000 Direct	-33.33%	Disposed	(price as of 2026-08-19)
Jan. 31, 2018	AMRN	F	14,004	$3.83	$53,635	14,996 Direct	-48.29%	Disposed	-81.2% (price as of 2026-08-19)
Jan. 31, 2018	AMRN	M	29,000	—	—	29,000 Direct	—	Acquired	(price as of 2026-08-19)
May 15, 2017	AMRN	A	87,000	—	—	87,000 Direct	—	Acquired	(price as of 2026-08-19)
Feb. 1, 2017	AMRN	A	133,000	$2.95	$392,350	133,000 Direct	—	Acquired	-75.6% (price as of 2026-08-19)
July 1, 2016	AMRN	A	625,000	—	—	625,000 Direct	—	Acquired	(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
July 15, 2026	CPRX	Restricted Stock Units	Common Stock (39,701)	—	Nov. 20, 2028	39,701	Disposed
July 15, 2026	CPRX	Restricted Stock Units	Common Stock (13,788)	—	Nov. 21, 2027	13,788	Disposed
July 15, 2026	CPRX	Restricted Stock Units	Common Stock (21,416)	—	Jan. 1, 2029	21,416	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (131,536)	$22.77	Nov. 20, 2032	131,536	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (169,248)	$21.12	Nov. 21, 2031	169,248	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (257,214)	$16.81	Jan. 1, 2031	257,214	Disposed
Jan. 5, 2026	CPRX	Restricted Stock Units	Common Stock (7,139)	—	—	7,139	Disposed
Nov. 21, 2025	CPRX	Restricted Stock Units	Common Stock (6,894)	—	—	6,894	Disposed
Nov. 20, 2025	CPRX	Restricted Stock Units	Common Stock (39,701)	—	—	39,701	Acquired
Nov. 20, 2025	CPRX	Options to purchase common stock	Common Stock (131,536)	$22.77	Nov. 20, 2032	131,536	Acquired
Jan. 2, 2025	CPRX	Restricted Stock Units	Common Stock (7,138)	—	—	7,138	Disposed
Nov. 21, 2024	CPRX	Restricted Stock Units	Common Stock (20,682)	—	—	20,682	Acquired
Nov. 21, 2024	CPRX	Options to purchase common stock	Common Stock (169,248)	$21.12	Nov. 21, 2031	169,248	Acquired
Dec. 16, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (25,000)	$2.19	July 1, 2026	25,000	Acquired
July 1, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (50,000)	$2.19	July 1, 2026	50,000	Disposed
March 1, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (31,000)	$3.80	Feb. 1, 2028	31,000	Disposed
March 1, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (19,000)	$2.95	Jan. 31, 2027	19,000	Disposed
March 1, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (50,000)	$2.19	July 1, 2026	50,000	Disposed
Feb. 22, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (50,000)	$2.95	Jan. 31, 2027	50,000	Disposed
Feb. 1, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (53,500)	$16.88	Feb. 1, 2029	53,500	Acquired
Feb. 1, 2019	AMRN	Restricted Stock Units [F8]	Ordinary Shares [F2] (38,200)	$0.00	—	38,200	Acquired
Jan. 31, 2019	AMRN	Restricted Stock Units [F8]	Ordinary Shares [F2] (26,000)	$0.00	—	26,000	Disposed
Jan. 31, 2019	AMRN	Restricted Stock Units [F8]	Ordinary Shares [F2] (29,000)	$0.00	—	29,000	Disposed
Jan. 9, 2019	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (200,000)	$2.19	July 1, 2026	200,000	Disposed
Sept. 24, 2018	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F2] (150,000)	$2.19	July 1, 2026	150,000	Disposed
Feb. 1, 2018	AMRN	Stock Option (Right to Buy)	Ordinary Shares [F1] (117,000)	$3.80	Feb. 1, 2028	117,000	Acquired
Feb. 1, 2018	AMRN	Restricted Stock Units [F5]	Ordinary Shares [F1] (78,000)	$0.00	—	78,000	Acquired
Jan. 31, 2018	AMRN	Restricted Stock Units [F5]	Ordinary Shares [F1] (29,000)	$0.00	—	29,000	Disposed
May 15, 2017	AMRN	Restricted Stock Units [F1]	Ordinary Shares [F4] (87,000)	$0.00	—	87,000	Acquired
Feb. 1, 2017	AMRN	Stock Option (right to buy)	Ordinary Shares [F2] (133,000)	$2.95	Jan. 31, 2027	133,000	Acquired
July 1, 2016	AMRN	Stock Option (right to buy)	Ordinary Shares [F2] (625,000)	$2.19	July 1, 2026	625,000	Acquired

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

Initial ownership (Form 3) 3 holdings

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

Date	Ticker	Security	Shares	Ownership
Jan. 3, 2024	CPRX	Common Stock, par value $0.001 per share	0	Direct
Jan. 3, 2024	CPRX	Options to purchase common stock→ Common Stock (257,214)	257,214	Direct
Jan. 3, 2024	CPRX	Restricted Stock Units→ Common Stock (35,693)	35,693	Direct