Elsbernd Brian, Chief Compliance and Legal Officer at Catalyst Pharmaceuticals ($CPRX), sold about $2.5 million worth of company shares on the open market in four transactions over the last 365 days. His most recent sale occurred on November 12, 2025. These sales rank 3,048th among 11,678 insiders in the database by total value sold, below the average of $8.6 million across 6.4 transactions per insider. Brian made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 29, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 6667 | $0.00 | 245,124.0000 | 127,201,954 | 2.80% | 0.01% |
| Dec. 29, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 2623 | $0.00 | 242,501.0000 | 127,201,954 | 1.07% | 0.00% |
| Dec. 29, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 6667 | $0.00 | 956,142.0000 | 127,201,954 | 0.69% | 0.01% |
| Dec. 8, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 7067 | $0.00 | 962,809.0000 | 127,201,954 | 0.73% | 0.01% |
| Dec. 8, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 2780 | $0.00 | 238,457.0000 | 127,201,954 | 1.15% | 0.00% |
| Dec. 8, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 7067 | $0.00 | 241,237.0000 | 127,201,954 | 3.02% | 0.01% |
| Nov. 20, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | A | Options to purchase common stock | 98652 | $0.00 | 945,161.0000 | 127,201,954 | 11.65% | 0.08% |
| Nov. 20, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | A | Restricted Stock Units | 29776 | $0.00 | 975,037.0000 | 127,201,954 | 3.15% | 0.02% |
| Nov. 21, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 5161 | $0.00 | 969,876.0000 | 127,201,954 | 0.53% | 0.00% |
| Nov. 21, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 2030 | $0.00 | 234,170.0000 | 127,201,954 | 0.86% | 0.00% |
| Nov. 21, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 5161 | $0.00 | 236,200.0000 | 127,201,954 | 2.23% | 0.00% |
| Nov. 12, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 40000 | $22.70 | 231,039.0000 | 127,201,954 | 20.94% | 0.03% |
| Sept. 8, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 112475 | $2.24 | 301,039.0000 | 124,943,603 | 59.65% | 0.09% |
| Sept. 8, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 30000 | $20.30 | 271,039.0000 | 124,943,603 | 9.97% | 0.02% |
| Sept. 8, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 112475 | $0.00 | 846,609.0000 | 124,943,603 | 11.73% | 0.09% |
| Sept. 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 20000 | $2.24 | 208,564.0000 | 124,943,603 | 10.61% | 0.02% |
| Sept. 4, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 30000 | $0.00 | 959,084.0000 | 124,943,603 | 3.03% | 0.02% |
| Sept. 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 20000 | $0.00 | 989,084.0000 | 124,943,603 | 1.98% | 0.02% |
| Sept. 4, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 30000 | $19.52 | 188,564.0000 | 124,943,603 | 13.73% | 0.02% |
| Sept. 4, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 30000 | $2.24 | 218,564.0000 | 124,943,603 | 15.91% | 0.02% |
| Sept. 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 20000 | $20.08 | 188,564.0000 | 124,943,603 | 9.59% | 0.02% |
| March 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 53255 | $2.24 | 241,819.0000 | 124,943,603 | 28.24% | 0.04% |
| March 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 9270 | $2.24 | 197,834.0000 | 124,943,603 | 4.92% | 0.01% |
| March 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 9720 | $23.23 | 188,564.0000 | 124,943,603 | 4.90% | 0.01% |
| March 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 53255 | $0.00 | 1,009,084.0000 | 124,943,603 | 5.01% | 0.04% |
| March 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 9270 | $0.00 | 1,062,339.0000 | 124,943,603 | 0.87% | 0.01% |
| March 3, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 53255 | $22.93 | 188,564.0000 | 124,943,603 | 22.02% | 0.04% |
| Feb. 14, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 2353 | $0.00 | 188,564.0000 | 124,943,603 | 1.23% | 0.00% |
| Feb. 14, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 9667 | $0.00 | 190,917.0000 | 124,943,603 | 5.33% | 0.01% |
| Feb. 14, 2025 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 9667 | $0.00 | 1,071,609.0000 | 124,943,603 | 0.89% | 0.01% |
| Dec. 27, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 6667 | $0.00 | 1,081,276.0000 | 125,407,279 | 0.61% | 0.01% |
| Dec. 27, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 1941 | $0.00 | 181,250.0000 | 125,407,279 | 1.06% | 0.00% |
| Dec. 27, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 6667 | $0.00 | 183,191.0000 | 125,407,279 | 3.78% | 0.01% |
| Dec. 9, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 7067 | $0.00 | 178,244.0000 | 125,407,279 | 4.13% | 0.01% |
| Dec. 9, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 1720 | $0.00 | 176,524.0000 | 125,407,279 | 0.96% | 0.00% |
| Dec. 9, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 7067 | $0.00 | 1,087,943.0000 | 125,407,279 | 0.65% | 0.01% |
| Nov. 26, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 9756 | $0.00 | 1,095,010.0000 | 125,407,279 | 0.88% | 0.01% |
| Nov. 26, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 50244 | $0.00 | 1,104,766.0000 | 125,407,279 | 4.35% | 0.04% |
| Nov. 26, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 3956 | $21.58 | 171,177.0000 | 125,407,279 | 2.26% | 0.00% |
| Nov. 26, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 9756 | $4.01 | 175,133.0000 | 125,407,279 | 5.90% | 0.01% |
| Nov. 26, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 9300 | $21.65 | 165,377.0000 | 125,407,279 | 5.32% | 0.01% |
| Nov. 26, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 50244 | $4.01 | 174,677.0000 | 125,407,279 | 40.38% | 0.04% |
| Nov. 21, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | A | Options to purchase common stock | 126704 | $0.00 | 1,139,527.0000 | 125,407,279 | 12.51% | 0.10% |
| Nov. 21, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | A | Restricted Stock Units | 15483 | $0.00 | 1,155,010.0000 | 125,407,279 | 1.36% | 0.01% |
| March 27, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common stock, par value $0.001 per share | 25000 | $16.44 | 124,433.0000 | 113,753,154 | 16.73% | 0.02% |
| Feb. 15, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 9667 | $0.00 | 1,012,823.0000 | 113,753,154 | 0.95% | 0.01% |
| Feb. 15, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 2353 | $0.00 | 149,433.0000 | 113,753,154 | 1.55% | 0.00% |
| Feb. 15, 2024 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 9667 | $0.00 | 151,786.0000 | 113,753,154 | 6.80% | 0.01% |
| Dec. 27, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 6666 | $0.00 | 144,742.0000 | 111,375,631 | 4.83% | 0.01% |
| Dec. 27, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 2623 | $0.00 | 142,119.0000 | 111,375,631 | 1.81% | 0.00% |
| Dec. 27, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 6666 | $0.00 | 1,022,490.0000 | 111,375,631 | 0.65% | 0.01% |
| Dec. 8, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | A | Restricted Stock Units | 21201 | $0.00 | 1,029,156.0000 | 111,375,631 | 2.10% | 0.02% |
| Dec. 8, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | A | Options to purchase common stock | 147621 | $0.00 | 1,007,955.0000 | 111,375,631 | 17.16% | 0.13% |
| March 20, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 50000 | $1.13 | 188,076.0000 | 111,375,631 | 36.21% | 0.04% |
| March 20, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Options to Purchase Common Stock | 50000 | $0.00 | 860,334.0000 | 111,375,631 | 5.49% | 0.04% |
| March 20, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | S | Common Stock, par value $0.001 per share | 50000 | $16.07 | 138,076.0000 | 111,375,631 | 26.59% | 0.04% |
| Feb. 15, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Restricted Stock Units | 9666 | $0.00 | 910,334.0000 | 111,375,631 | 1.05% | 0.01% |
| Feb. 15, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | F | Common Stock, par value $0.001 per share | 2353 | $0.00 | 138,076.0000 | 111,375,631 | 1.68% | 0.00% |
| Feb. 15, 2023 | CATALYST PHARMACEUTICALS, INC. | $CPRX | Elsbernd Brian | Chief Compliance/Legal Officer | M | Common Stock, par value $0.001 per share | 9666 | $0.00 | 140,429.0000 | 111,375,631 | 7.39% | 0.01% |