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Angelini deal cancels Catalyst Pharmaceuticals (CPRX) CLO equity

(Very High)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Catalyst Pharmaceuticals Chief Legal Officer Brian Elsbernd reported the cancellation of his equity interests in connection with the acquisition of Catalyst by Angelini Pharma S.p.A. On July 15, 2026, 242,501 common shares were disposed of at $31.50 per share, and all reported RSUs and stock options were cancelled and converted into cash rights using a $31.50 per share amount in the payout formulas. Following these transactions, the filing lists zero remaining holdings of the reported securities.

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Insider Elsbernd Brian
Role Chief Legal Officer
Type Security Shares Price Value
Disposition Options to purchase common stock 132,000 $0.00 --
Disposition Options to purchase common stock 200,000 $0.00 --
Disposition Options to purchase common stock 135,000 $0.00 --
Disposition Options to purchase common stock 69,000 $0.00 --
Disposition Options to purchase common stock 147,621 $0.00 --
Disposition Options to purchase common stock 126,704 $0.00 --
Disposition Options to purchase common stock 98,652 $0.00 --
Disposition Restricted Stock Units 7,067 $0.00 --
Disposition Restricted Stock Units 10,322 $0.00 --
Disposition Restricted Stock Units 29,776 $0.00 --
Disposition Common Stock, par value $0.001 per share 242,501 $31.50 $7.64M
Holdings After Transaction: Options to purchase common stock — 0 shares (Direct); Restricted Stock Units — 0 shares (Direct); Common Stock, par value $0.001 per share — 0 shares (Direct)
Footnotes (1)
  1. The reported securities were disposed of in connection with the consummation of the acquisition of the Issuer by Angelini Pharma S.p.A. (the "Merger") Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. In connection with the consummation of the Merger, each reported stock option ("Option") was cancelled and converted into the right to receive a cash payment (without interest, and less applicable tax withholdings and other authorized deductions) equal to the product of (x) the excess of $31.50 per share over the per-share price of such Option, multiplied by (y) the total number of shares subject to such Option. In connection with the consummation of the Merger, each reported restricted stock unit ("RSU") was cancelled and converted into the right to receive a cash payment (without interest, and less applicable tax withholdings and other authorized deductions) equal to the product of (x) the excess of $31.50 per share, multiplied by (y) the number of shares subject to such RSU. Each Option was fully vested. Each Option or RSU, as applicable, vested in full in connection with the consummation of the Merger.
Common shares disposed 242,501 shares Common Stock, par value $0.001 per share, disposed of on July 15, 2026
Disposition price per share $31.50 per share Price used for the common stock disposition and as the reference amount in cash payout formulas
RSUs cancelled (2031 expiry series) 29,776 units Restricted Stock Units expiring November 20, 2028 cancelled and converted into cash rights
RSUs cancelled (2027 expiry series) 10,322 units Restricted Stock Units expiring November 21, 2027 cancelled and converted into cash rights
Options cancelled at $22.77 strike 98,652 options Options to purchase common stock at $22.77 per share cancelled for cash based on $31.50 minus strike
Options cancelled at $3.42 strike 200,000 options Options to purchase common stock at $3.42 per share cancelled for cash based on $31.50 minus strike
Total disposition transactions 11 transactions One non-derivative and ten derivative disposition entries reported for July 15, 2026
Derivative transactions 10 entries Derivative-type RSU and option positions cancelled or disposed in connection with the acquisition
restricted stock unit financial
"Each reported restricted stock unit ("RSU") was cancelled and converted"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
stock option financial
"each reported stock option ("Option") was cancelled and converted"
A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.
disposition to issuer financial
"transaction code "D" is described as "Disposition to issuer""
contingent right financial
"represents a contingent right to receive one share of the Issuer's common"
vested in full financial
"Each Option or RSU, as applicable, vested in full in connection"
Merger financial
"consummation of the acquisition of the Issuer by Angelini Pharma S.p.A. (the "Merger")"
A merger is when two companies combine into a single business, with ownership and control reorganized so they operate as one entity. For investors it matters because mergers can change the value and risk of holdings—shares may be exchanged, diluted, or rise if the combined company saves costs or gains market power, and the deal often depends on regulatory approval and successful integration like two households joining resources and routines.

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FAQ

How many Catalyst Pharmaceuticals (CPRX) common shares were disposed of and at what price?

The Form 4 shows 242,501 shares of common stock disposed of at $31.50 per share on July 15, 2026. This disposition occurred in connection with Angelini Pharma S.p.A.’s acquisition of Catalyst Pharmaceuticals.

What happened to Brian Elsbernd’s RSUs in the Angelini Pharma acquisition of CPRX?

Each reported restricted stock unit was cancelled and converted into a cash right equal to $31.50 per share times the number of RSU shares. The Form 4 lists RSU blocks of 29,776, 10,322 and 7,067 units treated this way.

How were Brian Elsbernd’s CPRX stock options treated at the $31.50 amount?

Each reported stock option was cancelled and converted to cash equal to ($31.50 minus the option’s exercise price) multiplied by the option’s shares. Option tranches from $3.42 to $22.77 exercise prices were included.

Does the Form 4 show any remaining Catalyst Pharmaceuticals (CPRX) equity awards for Brian Elsbernd after the merger?

No. For each common stock, RSU, and stock option entry, the Form 4 reports 0 shares or units following the transaction. The filing therefore lists no remaining holdings in the reported Catalyst equity awards after the acquisition.

How many disposition transactions involving CPRX securities are reported in this Form 4?

The structured data shows 11 disposition transactions, consisting of one common stock entry and 10 derivative entries covering restricted stock units and stock options. All are coded as “Disposition to issuer” (code D) tied to the acquisition closing.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
X
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Elsbernd Brian

(Last)(First)(Middle)
355 ALHAMBRA CIRCLE
SUITE 801

(Street)
CORAL GABLES FLORIDA 33134

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
CATALYST PHARMACEUTICALS, INC. [ CPRX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Legal Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock, par value $0.001 per share07/15/2026D(1)242,501D$31.50D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Options to purchase common stock$4.6407/15/2026D(3)132,000 (5)12/02/2026Common Stock132,000$00D
Options to purchase common stock$3.4207/15/2026D(3)200,000 (5)12/30/2027Common Stock200,000$00D
Options to purchase common stock$7.0707/15/2026D(3)135,000 (5)12/28/2028Common Stock135,000$00D
Options to purchase common stock$18.5907/15/2026D(3)69,000 (5)12/27/2029Common Stock69,000$00D
Options to purchase common stock$14.1507/15/2026D(3)147,621 (6)12/08/2030Common Stock147,621$00D
Options to purchase common stock$21.1207/15/2026D(3)126,704 (6)11/21/2031Common Stock126,704$00D
Options to purchase common stock$22.7707/15/2026D(3)98,652 (6)11/20/2032Common Stock98,652$00D
Restricted Stock Units(2)07/15/2026D(4)7,067 (6)12/08/2026Common Stock7,067$00D
Restricted Stock Units(2)07/15/2026D(4)10,322 (6)11/21/2027Common Stock10,322$00D
Restricted Stock Units(2)07/15/2026D(4)29,776 (6)11/20/2028Common Stock29,776$00D
Explanation of Responses:
1. The reported securities were disposed of in connection with the consummation of the acquisition of the Issuer by Angelini Pharma S.p.A. (the "Merger")
2. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
3. In connection with the consummation of the Merger, each reported stock option ("Option") was cancelled and converted into the right to receive a cash payment (without interest, and less applicable tax withholdings and other authorized deductions) equal to the product of (x) the excess of $31.50 per share over the per-share price of such Option, multiplied by (y) the total number of shares subject to such Option.
4. In connection with the consummation of the Merger, each reported restricted stock unit ("RSU") was cancelled and converted into the right to receive a cash payment (without interest, and less applicable tax withholdings and other authorized deductions) equal to the product of (x) the excess of $31.50 per share, multiplied by (y) the number of shares subject to such RSU.
5. Each Option was fully vested.
6. Each Option or RSU, as applicable, vested in full in connection with the consummation of the Merger.
/s/ Brian Elsbernd07/17/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)