Brian Elsbernd

Insider

First SEC filing: Jan. 4, 2019 · Latest: Jan. 4, 2019

On this page

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 transactions

0 buys (P) 4 sells (S) Net: $-2,504,200 + 76 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

76 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D
July 15, 2026	CPRX	D	29,776	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	10,322	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	7,067	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	98,652	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	126,704	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	147,621	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	69,000	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	135,000	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	200,000	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	132,000	—	—	0 Direct	-100.00%	Disposed
July 15, 2026	CPRX	D	242,501	$31.50	$7,638,782	0 Direct	-100.00%	Disposed
Dec. 29, 2025	CPRX	M	6,667	—	—	956,142 Direct	-0.69%	Disposed
Dec. 29, 2025	CPRX	F	2,623	—	—	242,501 Direct	-1.07%	Disposed
Dec. 29, 2025	CPRX	M	6,667	—	—	245,124 Direct	+2.80%	Acquired
Dec. 8, 2025	CPRX	M	7,067	—	—	962,809 Direct	-0.73%	Disposed
Dec. 8, 2025	CPRX	F	2,780	—	—	238,457 Direct	-1.15%	Disposed
Dec. 8, 2025	CPRX	M	7,067	—	—	241,237 Direct	+3.02%	Acquired
Nov. 21, 2025	CPRX	M	5,161	—	—	969,876 Direct	-0.53%	Disposed
Nov. 21, 2025	CPRX	F	2,030	—	—	234,170 Direct	-0.86%	Disposed
Nov. 21, 2025	CPRX	M	5,161	—	—	236,200 Direct	+2.23%	Acquired
Nov. 20, 2025	CPRX	A	29,776	—	—	975,037 Direct	+3.15%	Acquired
Nov. 20, 2025	CPRX	A	98,652	—	—	945,161 Direct	+11.65%	Acquired
Nov. 12, 2025	CPRX	S	40,000	$22.70	$908,000	231,039 Direct	+20.94%	Acquired
Sept. 8, 2025	CPRX	M	112,475	—	—	846,609 Direct	-11.73%	Disposed
Sept. 8, 2025	CPRX	S	30,000	$20.30	$609,000	271,039 Direct	-9.97%	Disposed
Sept. 8, 2025	CPRX	M	112,475	$2.24	$251,944	301,039 Direct	+59.65%	Acquired
Sept. 4, 2025	CPRX	M	30,000	—	—	959,084 Direct	-3.03%	Disposed
Sept. 4, 2025	CPRX	S	30,000	$19.52	$585,600	188,564 Direct	-13.73%	Disposed
Sept. 4, 2025	CPRX	M	30,000	$2.24	$67,200	218,564 Direct	+15.91%	Acquired
Sept. 3, 2025	CPRX	M	20,000	—	—	989,084 Direct	-1.98%	Disposed
Sept. 3, 2025	CPRX	S	20,000	$20.08	$401,600	188,564 Direct	-9.59%	Disposed
Sept. 3, 2025	CPRX	M	20,000	$2.24	$44,800	208,564 Direct	+10.61%	Acquired
March 3, 2025	CPRX	M	53,255	—	—	1,009,084 Direct	-5.01%	Disposed
March 3, 2025	CPRX	M	9,270	—	—	1,062,339 Direct	-0.87%	Disposed
March 3, 2025	CPRX	S	53,255	$22.93	$1,221,137	188,564 Direct	-22.02%	Disposed
March 3, 2025	CPRX	M	53,255	$2.24	$119,291	241,819 Direct	+28.24%	Acquired
March 3, 2025	CPRX	S	9,720	$23.23	$225,796	188,564 Direct	-4.90%	Disposed
March 3, 2025	CPRX	M	9,270	$2.24	$20,765	197,834 Direct	+4.92%	Acquired
Feb. 14, 2025	CPRX	M	9,667	—	—	1,071,609 Direct	-0.89%	Disposed
Feb. 14, 2025	CPRX	F	2,353	—	—	188,564 Direct	-1.23%	Disposed
Feb. 14, 2025	CPRX	M	9,667	—	—	190,917 Direct	+5.33%	Acquired
Dec. 27, 2024	CPRX	M	6,667	—	—	1,081,276 Direct	-0.61%	Disposed
Dec. 27, 2024	CPRX	F	1,941	—	—	181,250 Direct	-1.06%	Disposed
Dec. 27, 2024	CPRX	M	6,667	—	—	183,191 Direct	+3.78%	Acquired
Dec. 9, 2024	CPRX	M	7,067	—	—	1,087,943 Direct	-0.65%	Disposed
Dec. 9, 2024	CPRX	F	1,720	—	—	176,524 Direct	-0.96%	Disposed
Dec. 9, 2024	CPRX	M	7,067	—	—	178,244 Direct	+4.13%	Acquired
Nov. 26, 2024	CPRX	M	9,756	—	—	1,095,010 Direct	-0.88%	Disposed
Nov. 26, 2024	CPRX	M	50,244	—	—	1,104,766 Direct	-4.35%	Disposed
Nov. 26, 2024	CPRX	S	3,956	$21.58	$85,370	171,177 Direct	-2.26%	Disposed
Nov. 26, 2024	CPRX	M	9,756	$4.01	$39,122	175,133 Direct	+5.90%	Acquired
Nov. 26, 2024	CPRX	S	9,300	$21.65	$201,345	165,377 Direct	-5.32%	Disposed
Nov. 26, 2024	CPRX	M	50,244	$4.01	$201,478	174,677 Direct	+40.38%	Acquired
Nov. 21, 2024	CPRX	A	15,483	—	—	1,155,010 Direct	+1.36%	Acquired
Nov. 21, 2024	CPRX	A	126,704	—	—	1,139,527 Direct	+12.51%	Acquired
March 27, 2024	CPRX	S	25,000	$16.44	$411,000	124,433 Direct	-16.73%	Disposed
Feb. 15, 2024	CPRX	M	9,667	—	—	1,012,823 Direct	-0.95%	Disposed
Feb. 15, 2024	CPRX	F	2,353	—	—	149,433 Direct	-1.55%	Disposed
Feb. 15, 2024	CPRX	M	9,667	—	—	151,786 Direct	+6.80%	Acquired
Dec. 27, 2023	CPRX	M	6,666	—	—	1,022,490 Direct	-0.65%	Disposed
Dec. 27, 2023	CPRX	F	2,623	—	—	142,119 Direct	-1.81%	Disposed
Dec. 27, 2023	CPRX	M	6,666	—	—	144,742 Direct	+4.83%	Acquired
Dec. 8, 2023	CPRX	A	21,201	—	—	1,029,156 Direct	+2.10%	Acquired
Dec. 8, 2023	CPRX	A	147,621	—	—	1,007,955 Direct	+17.16%	Acquired
Feb. 15, 2023	CPRX	M	9,666	—	—	910,334 Direct	-1.05%	Disposed
Feb. 15, 2023	CPRX	F	2,353	—	—	138,076 Direct	-1.68%	Disposed
Feb. 15, 2023	CPRX	M	9,666	—	—	140,429 Direct	+7.39%	Acquired
Dec. 27, 2022	CPRX	A	20,000	—	—	920,000 Direct	+2.22%	Acquired
Dec. 27, 2022	CPRX	A	69,000	—	—	900,000 Direct	+8.30%	Acquired
Dec. 6, 2022	CPRX	M	14,667	—	—	831,000 Direct	-1.73%	Disposed
Dec. 6, 2022	CPRX	M	14,667	—	—	130,763 Direct	+12.63%	Acquired
Nov. 14, 2022	CPRX	M	40,000	—	—	845,667 Direct	-4.52%	Disposed
Nov. 14, 2022	CPRX	M	65,000	—	—	885,667 Direct	-6.84%	Disposed
Nov. 14, 2022	CPRX	M	40,000	$0.79	$31,600	116,096 Direct	+52.57%	Acquired
Nov. 14, 2022	CPRX	M	65,000	$1.85	$120,250	76,096 Direct	+585.80%	Acquired
Nov. 11, 2022	CPRX	S	14,666	$16.24	$238,176	11,096 Direct	-56.93%	Disposed
Feb. 14, 2022	CPRX	A	29,000	—	—	950,667 Direct	+3.15%	Acquired
Dec. 28, 2021	CPRX	A	135,000	—	—	921,667 Direct	+17.16%	Acquired
Dec. 3, 2021	CPRX	M	14,667	—	—	786,667 Direct	-1.83%	Disposed
Dec. 3, 2021	CPRX	F	3,571	—	—	25,762 Direct	-12.17%	Disposed
Dec. 3, 2021	CPRX	M	14,667	—	—	29,333 Direct	+100.01%	Acquired
Dec. 30, 2020	CPRX	A	200,000	—	—	801,334 Direct	+33.26%	Acquired
Dec. 22, 2020	CPRX	A	14,666	—	—	601,334 Direct	-2.38%	Disposed
Dec. 22, 2020	CPRX	M	14,666	—	—	14,666 Direct	—	Acquired
Dec. 2, 2019	CPRX	A	44,000	—	—	616,000 Direct	+7.69%	Acquired
Dec. 2, 2019	CPRX	A	132,000	—	—	572,000 Direct	+30.00%	Acquired

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 (29,776)	—	Nov. 20, 2028	29,776	Disposed
July 15, 2026	CPRX	Restricted Stock Units	Common Stock (10,322)	—	Nov. 21, 2027	10,322	Disposed
July 15, 2026	CPRX	Restricted Stock Units	Common Stock (7,067)	—	Dec. 8, 2026	7,067	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (98,652)	$22.77	Nov. 20, 2032	98,652	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (126,704)	$21.12	Nov. 21, 2031	126,704	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (147,621)	$14.15	Dec. 8, 2030	147,621	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (69,000)	$18.59	Dec. 27, 2029	69,000	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (135,000)	$7.07	Dec. 28, 2028	135,000	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (200,000)	$3.42	Dec. 30, 2027	200,000	Disposed
July 15, 2026	CPRX	Options to purchase common stock	Common Stock (132,000)	$4.64	Dec. 2, 2026	132,000	Disposed
Dec. 29, 2025	CPRX	Restricted Stock Units	Common Stock (6,667)	—	—	6,667	Disposed
Dec. 8, 2025	CPRX	Restricted Stock Units	Common Stock (7,067)	—	—	7,067	Disposed
Nov. 21, 2025	CPRX	Restricted Stock Units	Common Stock (5,161)	—	—	5,161	Disposed
Nov. 20, 2025	CPRX	Restricted Stock Units	Common Stock (29,776)	—	—	29,776	Acquired
Nov. 20, 2025	CPRX	Options to purchase common stock	Common Stock (98,652)	$22.77	Nov. 20, 2032	98,652	Acquired
Sept. 8, 2025	CPRX	Options to Purchase Common Stock	Common Stock (112,475)	$2.24	Dec. 19, 2025	112,475	Disposed
Sept. 4, 2025	CPRX	Options to Purchase Common Stock	Common Stock (30,000)	$2.24	Dec. 19, 2025	30,000	Disposed
Sept. 3, 2025	CPRX	Options to Purchase Common Stock	Common Stock (20,000)	$2.24	Dec. 19, 2025	20,000	Disposed
March 3, 2025	CPRX	Options to Purchase Common Stock	Common Stock (53,255)	$2.24	Dec. 19, 2025	53,255	Disposed
March 3, 2025	CPRX	Options to Purchase Common Stock	Common Stock (9,270)	$2.24	Dec. 19, 2025	9,270	Disposed
Feb. 14, 2025	CPRX	Restricted Stock Units	Common Stock (9,667)	—	—	9,667	Disposed
Dec. 27, 2024	CPRX	Restricted Stock Units	Common Stock (6,667)	—	—	6,667	Disposed
Dec. 9, 2024	CPRX	Restricted Stock Units	Common Stock (7,067)	—	—	7,067	Disposed
Nov. 26, 2024	CPRX	Options to Purchase Common Stock	Common Stock (9,756)	$4.01	Jan. 2, 2025	9,756	Disposed
Nov. 26, 2024	CPRX	Options to Purchase Common Stock	Common Stock (50,244)	$4.01	Jan. 2, 2025	50,244	Disposed
Nov. 21, 2024	CPRX	Restricted Stock Units	Common Stock (15,483)	—	—	15,483	Acquired
Nov. 21, 2024	CPRX	Options to purchase common stock	Common Stock (126,704)	$21.12	Nov. 21, 2031	126,704	Acquired
Feb. 15, 2024	CPRX	Restricted Stock Units	Common Stock (9,667)	—	—	9,667	Disposed
Dec. 27, 2023	CPRX	Restricted Stock Units	Common Stock (6,666)	—	—	6,666	Disposed
Dec. 8, 2023	CPRX	Restricted Stock Units	Common Stock (21,201)	—	—	21,201	Acquired
Dec. 8, 2023	CPRX	Options to purchase common stock	Common Stock (147,621)	$14.15	Dec. 8, 2030	147,621	Acquired
Feb. 15, 2023	CPRX	Restricted Stock Units	Common Stock (9,666)	—	—	9,666	Disposed
Dec. 27, 2022	CPRX	Restricted Stock Units	Common Stock (20,000)	—	—	20,000	Acquired
Dec. 27, 2022	CPRX	Options to purchase common stock	Common Stock (69,000)	$18.59	Dec. 27, 2029	69,000	Acquired
Dec. 6, 2022	CPRX	Restricted Stock Units	Common Stock (14,667)	—	—	14,667	Disposed
Nov. 14, 2022	CPRX	Options to purchase common stock	Common Stock (40,000)	$0.79	June 15, 2023	40,000	Disposed
Nov. 14, 2022	CPRX	Options to purchase common stock	Common Stock (65,000)	$1.85	Feb. 16, 2023	65,000	Disposed
Feb. 14, 2022	CPRX	Restricted Stock Units	Common Stock (29,000)	—	—	29,000	Acquired
Dec. 28, 2021	CPRX	Options to purchase common stock	Common Stock (135,000)	$7.07	Dec. 28, 2028	135,000	Acquired
Dec. 3, 2021	CPRX	Restricted Stock Units	Common Stock (14,667)	—	—	14,667	Disposed
Dec. 30, 2020	CPRX	Options to purchase common stock	Common Stock (200,000)	$3.42	Dec. 30, 2027	200,000	Acquired
Dec. 22, 2020	CPRX	Restricted Stock Units	Common Stock (14,666)	—	—	14,666	Disposed
Dec. 2, 2019	CPRX	Restricted Stock Units	Common Stock (44,000)	—	—	44,000	Acquired
Dec. 2, 2019	CPRX	Options to purchase common stock	Common Stock (132,000)	$4.64	Dec. 2, 2026	132,000	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
Jan. 4, 2019	CPRX	Options to purchase Common Stock→ Common Stock (65,000)	65,000	Direct
Jan. 4, 2019	CPRX	Options to purchase Common Stock→ Common Stock (40,000)	40,000	Direct
Jan. 4, 2019	CPRX	Options to purchase Common Stock→ Common Stock (50,000)	50,000	Direct
Jan. 4, 2019	CPRX	Options to purchase Common Stock→ Common Stock (60,000)	60,000	Direct
Jan. 4, 2019	CPRX	Options to purchase Common Stock→ Common Stock (225,000)	225,000	Direct

Compensation (DEF 14A)

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

CIK 1369568

Vice President, Legal and Compliance

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2017	$283,091,242,000	—	—	—	—	—	—	—

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