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Angelini deal converts CATALYST PHARMACEUTICALS (NASDAQ: CPRX) officer equity to cash

(Very High)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Steve Miller, chief operating and scientific officer of Catalyst Pharmaceuticals, reported the disposition to the issuer of 1,093,803 shares of common stock at $31.50 per share on July 15, 2026, in connection with the acquisition of Catalyst by Angelini Pharma S.p.A. (the Merger).

On the same date, all reported restricted stock units (47,826; 16,534; 11,873 underlying shares) and multiple option grants (including 158,454 options at $22.77, 202,958 at $21.12 and 275,000 at $3.42) were canceled and converted into rights to receive cash based on a $31.50 reference price per share. Each option and RSU vested in full at consummation of the Merger, and reported holdings after these transactions were 0 shares and 0 derivative securities.

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Insider Miller Steve
Role Chief Op. & Scientific Officer
Type Security Shares Price Value
Disposition Options to purchase common stock 180,000 $0.00 --
Disposition Options to purchase common stock 275,000 $0.00 --
Disposition Options to purchase common stock 185,000 $0.00 --
Disposition Options to purchase common stock 146,000 $0.00 --
Disposition Options to purchase common stock 248,004 $0.00 --
Disposition Options to purchase common stock 202,958 $0.00 --
Disposition Options to purchase common stock 158,454 $0.00 --
Disposition Restricted Stock Units 11,873 $0.00 --
Disposition Restricted Stock Units 16,534 $0.00 --
Disposition Restricted Stock Units 47,826 $0.00 --
Disposition Common Stock, par value $0.001 per share 1,093,803 $31.50 $34.45M
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 1,093,803 shares Disposition to issuer in connection with Angelini Pharma S.p.A. acquisition at $31.50 per share
Per-share consideration reference $31.50 per share Reference price for common stock disposition and for cash calculations on RSUs and options
RSUs canceled (largest tranche) 47,826 units Restricted Stock Units canceled and converted into cash rights based on $31.50 per underlying share
Options canceled at $22.77 strike 158,454 options Fully vested options with $22.7700 exercise price canceled and converted into cash rights
Options canceled at $3.42 strike 275,000 options Fully vested options with $3.4200 exercise price canceled and converted into cash rights
Holdings after transactions 0 shares; 0 derivative securities Reported total holdings following all merger-related dispositions and cancellations
Total disposition entries 11 transactions Count of reported dispositions of common stock, RSUs, and options on July 15, 2026
Restricted Stock Units financial
"Each reported restricted stock unit ("RSU") was cancelled and converted into cash"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
stock option financial
"each reported stock option ("Option") was cancelled and converted into the right to receive a cash payment"
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.
Merger financial
"disposed of in connection with the 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.
Angelini Pharma S.p.A. financial
"acquisition of the Issuer by Angelini Pharma S.p.A. (the "Merger")"
per-share price financial
"the excess of $31.50 per share over the per-share price of such Option"

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FAQ

What did Steve Miller report in his Form 4 for CATALYST PHARMACEUTICALS (CPRX)?

Steve Miller reported disposing of 1,093,803 shares of common stock at $31.50 per share back to Catalyst in connection with its acquisition by Angelini Pharma S.p.A., and the cancellation of all his reported RSUs and stock options in exchange for cash-based consideration tied to the same price.

At what price were Steve Miller’s CPRX common shares disposed?

The reported 1,093,803 shares of common stock were disposed at $31.50 per share. This issuer disposition occurred on July 15, 2026, and was tied to the closing of the acquisition of Catalyst Pharmaceuticals by Angelini Pharma S.p.A. as described in the filing footnotes.

What happened to Steve Miller’s restricted stock units in the CPRX–Angelini Pharma merger?

All reported restricted stock units (RSUs) were canceled and converted into cash rights. Three tranches covering 47,826, 16,534 and 11,873 underlying shares vested in full at Merger closing, with cash amounts based on a $31.50 per-share reference price before tax withholdings and deductions.

How were Steve Miller’s CPRX stock options treated in the Angelini Pharma acquisition?

All reported stock options were canceled and converted into rights to receive cash. For each option, the cash equals ( $31.50 minus the option’s per-share exercise price ) multiplied by the number of option shares, with grants including 275,000 options at $3.42 and 185,000 at $7.07, all fully vested at closing.

Does Steve Miller hold any Catalyst Pharmaceuticals securities after these transactions?

According to the Form 4, Steve Miller’s reported holdings after the transactions are 0 shares and 0 derivative securities. The disposition of common stock and the cancellation of all reported RSUs and options in connection with the Merger eliminated his reported equity position in Catalyst Pharmaceuticals.

Were Steve Miller’s CPRX transactions made under a Rule 10b5-1 trading plan?

No. The Form 4’s Rule 10b5-1 checkbox is not marked as an affirmative trading plan, and the footnotes attribute the transactions to the consummation of the Merger, not to a pre-arranged 10b5-1 trading plan or other discretionary selling program.
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*
Miller Steve

(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 Op. & Scientific 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)1,093,803D$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)180,000 (5)12/02/2026Common Stock180,000$00D
Options to purchase common stock$3.4207/15/2026D(3)275,000 (5)12/30/2027Common Stock275,000$00D
Options to purchase common stock$7.0707/15/2026D(3)185,000 (5)12/28/2028Common Stock185,000$00D
Options to purchase common stock$18.5907/15/2026D(3)146,000 (5)12/27/2029Common Stock146,000$00D
Options to purchase common stock$14.1507/15/2026D(3)248,004 (6)12/08/2030Common Stock248,004$00D
Options to purchase common stock$21.1207/15/2026D(3)202,958 (6)11/21/2031Common Stock202,958$00D
Options to purchase common stock$22.7707/15/2026D(3)158,454 (6)11/20/2032Common Stock158,454$00D
Restricted Stock Units(2)07/15/2026D(4)11,873 (6)12/08/2026Common Stock11,873$00D
Restricted Stock Units(2)07/15/2026D(4)16,534 (6)11/21/2027Common Stock16,534$00D
Restricted Stock Units(2)07/15/2026D(4)47,826 (6)11/20/2028Common Stock47,826$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/ Steve Miller07/17/2026
** 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)