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Soleno (SLNO) SVP exits equity as merger pays $53 per share

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Soleno Therapeutics senior vice president of clinical development Michael F. Huang reported dispositions tied to the company’s cash merger with Neocrine Biosciences. On May 18, 2026, all of his Soleno common shares and equity awards were cancelled and converted into cash.

The filing shows 39,823 shares of common stock disposed to the issuer, leaving him with zero common shares. In addition, stock options covering 11,900, 13,800, and 110,000 shares were cancelled for cash equal to the $53.00 per-share merger consideration minus each option’s exercise price. These are mechanical merger-related cash-outs, not open-market trades.

Positive

  • None.

Negative

  • None.
Insider Huang Michael F.
Role Sr. VP of Clinical Development
Type Security Shares Price Value
Disposition Stock Option (Right to buy) 110,000 $0.00 --
Disposition Stock Option (Right to buy) 13,800 $0.00 --
Disposition Stock Option (Right to buy) 11,900 $0.00 --
Disposition Common Stock 39,823 $0.00 --
Holdings After Transaction: Stock Option (Right to buy) — 0 shares (Direct, null); Common Stock — 0 shares (Direct, null)
Footnotes (1)
  1. Certain of these shares are represented by previously reported restricted stock units ("RSUs"). Pursuant to the Agreement and Plan of Merger, dated as of April 5, 2026, by and among Soleno Therapeutics, Inc. (the "Company"), Neocrine Biosciences, Inc. ("Parent") and Sigma Merger Sub, Inc. ("Merger Sub"), on May 18, 2026, Merger Sub merged with and into the Company (the "Merger"), with the Company continuing as the surviving corporation and a wholly owned subsidiary of Parent. In connection with the Merger, each issued and outstanding vested and unvested RSU was cancelled and converted into the right to receive an amount equal to $53.00 in cash (the "Merger Consideration"). In connection with the Merger, each issued and outstanding share of the Company's Common Stock was cancelled and converted into the right to receive an amount in cash equal to the Merger Consideration. At the effective time of the Merger, this option was cancelled in exchange for a cash payment equal to (x) the difference between the Merger Consideration and the per share exercise price of the option, multiplied by (y) the number of shares covered by the option as of immediately prior to such cancellation.
Common shares disposed 39,823 shares Issuer disposition on May 18, 2026
Merger consideration $53.00 per share Cash paid for each share/RSU in merger
Option grant 1 11,900 shares at $43.65 Stock option cancelled for cash in merger
Option grant 2 13,800 shares at $49.17 Stock option cancelled for cash in merger
Option grant 3 110,000 shares at $21.93 Stock option cancelled for cash in merger
Common shares after transaction 0 shares Holdings following merger-related disposition
restricted stock units ("RSUs") financial
"Certain of these shares are represented by previously reported restricted stock units ("RSUs")."
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
Agreement and Plan of Merger regulatory
"Pursuant to the Agreement and Plan of Merger, dated as of April 5, 2026..."
An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.
Merger Consideration financial
"was cancelled and converted into the right to receive an amount equal to $53.00 in cash (the "Merger Consideration")."
Merger consideration is the total payment a company or buyer offers to shareholders of a target company in exchange for combining the two businesses, and can include cash, shares in the surviving company, debt assumption, or a mix of these. Investors care because the form and amount affect the deal’s value, tax consequences, immediate cash received versus future ownership, and the risk and upside of holding new shares — similar to choosing between cash now or stock that could grow later.
wholly owned subsidiary financial
"with the Company continuing as the surviving corporation and a wholly owned subsidiary of Parent."
A wholly owned subsidiary is a company whose entire ownership is held by another company (the parent), so the parent controls decisions, operations, and finances. Think of it as a fully controlled branch that runs as its own legal entity but whose results flow straight into the parent’s financial statements; investors watch these structures because they affect consolidated revenue, risk exposure, and how profits, liabilities, and cash flow are allocated across the corporate group.
disposition to issuer financial
"transaction_code_description": "Disposition to issuer""
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*
Huang Michael F.

(Last)(First)(Middle)
100 MARINE PARKWAY, SUITE 400

(Street)
REDWOOD CITY CALIFORNIA 94065

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
SOLENO THERAPEUTICS INC [ SLNO ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Sr. VP of Clinical Development
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026
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 Stock05/18/2026D39,823(1)D(2)0D
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
Stock Option (Right to buy)$21.9305/18/2026D110,000 (3)11/08/2033Common Stock110,000(3)0D
Stock Option (Right to buy)$49.1705/18/2026D13,800 (3)01/21/2035Common Stock13,800(3)0D
Stock Option (Right to buy)$43.6505/18/2026D11,900 (3)01/21/2036Common Stock11,900(3)0D
Explanation of Responses:
1. Certain of these shares are represented by previously reported restricted stock units ("RSUs"). Pursuant to the Agreement and Plan of Merger, dated as of April 5, 2026, by and among Soleno Therapeutics, Inc. (the "Company"), Neocrine Biosciences, Inc. ("Parent") and Sigma Merger Sub, Inc. ("Merger Sub"), on May 18, 2026, Merger Sub merged with and into the Company (the "Merger"), with the Company continuing as the surviving corporation and a wholly owned subsidiary of Parent. In connection with the Merger, each issued and outstanding vested and unvested RSU was cancelled and converted into the right to receive an amount equal to $53.00 in cash (the "Merger Consideration").
2. In connection with the Merger, each issued and outstanding share of the Company's Common Stock was cancelled and converted into the right to receive an amount in cash equal to the Merger Consideration.
3. At the effective time of the Merger, this option was cancelled in exchange for a cash payment equal to (x) the difference between the Merger Consideration and the per share exercise price of the option, multiplied by (y) the number of shares covered by the option as of immediately prior to such cancellation.
/s/ Anish Bhatnagar, Attorney-in-Fact05/18/2026
** 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)

FAQ

What insider transaction did Soleno Therapeutics (SLNO) report for Michael F. Huang?

Soleno reported that Michael F. Huang disposed of all his company equity in connection with a cash merger. His 39,823 common shares and multiple stock option grants were cancelled and exchanged for cash under the agreed merger terms at $53.00 per share.

How many Soleno (SLNO) common shares did Michael F. Huang relinquish?

The filing shows Michael F. Huang disposed of 39,823 shares of Soleno common stock. After this issuer disposition related to the merger, his reported common stock holdings were reduced to zero, meaning he no longer holds Soleno common shares in this Form 4.

What happened to Michael F. Huang’s Soleno (SLNO) stock options in the merger?

Huang’s stock options were cancelled at the merger’s effective time in exchange for cash. Each option paid the difference between the $53.00 merger consideration and its exercise price, multiplied by the shares covered, turning his option positions into cash rather than ongoing equity.

Which specific Soleno (SLNO) option grants were cancelled for Michael F. Huang?

Three option grants were cancelled: 11,900 shares at a $43.65 exercise price, 13,800 shares at $49.17, and 110,000 shares at $21.93. Each was converted into a cash payment based on the $53.00 per-share merger consideration specified in the merger agreement.

Why were Soleno (SLNO) restricted stock units and shares cancelled in this filing?

The cancellation occurred because Soleno completed a cash merger with Neocrine Biosciences. Under the merger agreement, each issued and outstanding RSU and common share was cancelled and converted into the right to receive $53.00 in cash, called the merger consideration.

Does Michael F. Huang still hold any Soleno (SLNO) equity after these transactions?

According to the Form 4, Huang’s total common stock holdings following the transactions are zero shares. His reported stock options were also fully cancelled for cash, meaning this filing shows no remaining Soleno equity positions for him after the merger-related dispositions.