Brian Elsbernd Catalyst Pharmaceuticals, Inc. (CPRX) insider trading activity

Brian Elsbernd is Chief Compliance/Legal Officer of CATALYST PHARMACEUTICALS, INC.. Currently has a direct ownership of 271,039 shares of CPRX, which is worth approximately $5.35 Million. The most recent transaction as insider was on Sep 08, 2025, when has been sold 30,000 shares (Common Stock, par value $0.001 per share) at a price of $20.3 per share, resulting in proceeds of $609,000. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 271K

43.74% 3M change

117.82% 12M change

Total Value Held $5.35 Million

Brian Elsbernd Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Sep 08 2025	SELL Open market or private sale	$609,000 $20.3 p/Share	30,000 Reduced 9.97%	271,039 Common Stock, par valu...
Sep 08 2025	BUY Exercise of conversion of derivative security	$251,944 $2.24 p/Share	112,475 Added 27.2%	301,039 Common Stock, par valu...
Sep 04 2025	SELL Open market or private sale	$585,600 $19.52 p/Share	30,000 Reduced 13.73%	188,564 Common Stock, par valu...
Sep 04 2025	BUY Exercise of conversion of derivative security	$67,200 $2.24 p/Share	30,000 Added 12.07%	218,564 Common Stock, par valu...
Sep 03 2025	SELL Open market or private sale	$401,599 $20.08 p/Share	20,000 Reduced 9.59%	188,564 Common Stock, par valu...
Sep 03 2025	BUY Exercise of conversion of derivative security	$44,800 $2.24 p/Share	20,000 Added 8.75%	208,564 Common Stock, par valu...
Mar 03 2025	SELL Open market or private sale	$1,453,463 $23.08 p/Share	62,975 Reduced 25.04%	188,564 Common Stock, par valu...
Mar 03 2025	BUY Exercise of conversion of derivative security	$140,056 $2.24 p/Share	62,525 Added 20.54%	241,819 Common Stock, par valu...
Feb 14 2025	SELL Payment of exercise price or tax liability	-	2,353 Reduced 1.23%	188,564 Common Stock, par valu...
Feb 14 2025	BUY Exercise of conversion of derivative security	-	9,667 Added 4.82%	190,917 Common Stock, par valu...
Dec 27 2024	SELL Payment of exercise price or tax liability	-	1,941 Reduced 1.06%	181,250 Common Stock, par valu...
Dec 27 2024	BUY Exercise of conversion of derivative security	-	6,667 Added 3.51%	183,191 Common Stock, par valu...
Dec 09 2024	SELL Payment of exercise price or tax liability	-	1,720 Reduced 0.96%	176,524 Common Stock, par valu...
Dec 09 2024	BUY Exercise of conversion of derivative security	-	7,067 Added 3.81%	178,244 Common Stock, par valu...
Nov 26 2024	SELL Open market or private sale	$286,594 $21.62 p/Share	13,256 Reduced 7.19%	171,177 Common Stock, par valu...
Nov 26 2024	BUY Exercise of conversion of derivative security	$240,600 $4.01 p/Share	60,000 Added 25.52%	175,133 Common Stock, par valu...
Mar 27 2024	SELL Open market or private sale	$411,000 $16.44 p/Share	25,000 Reduced 16.73%	124,433 Common Stock, par valu...
Feb 15 2024	SELL Payment of exercise price or tax liability	-	2,353 Reduced 1.55%	149,433 Common Stock, par valu...
Feb 15 2024	BUY Exercise of conversion of derivative security	-	9,667 Added 5.99%	151,786 Common Stock, par valu...
Dec 27 2023	SELL Payment of exercise price or tax liability	-	2,623 Reduced 1.81%	142,119 Common Stock, par valu...
Dec 27 2023	BUY Exercise of conversion of derivative security	-	6,666 Added 4.4%	144,742 Common Stock, par valu...
Mar 20 2023	SELL Open market or private sale	$803,500 $16.07 p/Share	50,000 Reduced 26.58%	138,076 Common Stock, par valu...
Mar 20 2023	BUY Exercise of conversion of derivative security	$56,499 $1.13 p/Share	50,000 Added 21.0%	188,076 Common Stock, par valu...
Feb 15 2023	SELL Payment of exercise price or tax liability	-	2,353 Reduced 1.68%	138,076 Common Stock, par valu...
Feb 15 2023	BUY Exercise of conversion of derivative security	-	9,666 Added 6.44%	140,429 Common Stock, par valu...

Brian Elsbernd

Chief Compliance/Legal Officer

Coral Gables, FL

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