STOCK TITAN

Solid Biosciences (SLDB) CFO reports PSU, RSU vesting and tax sale

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Solid Biosciences CFO & Treasurer Kevin Tan reported multiple equity transactions. On January 29, 2026, 56,646 performance stock units converted one-for-one into common stock, increasing his directly held common shares to 102,746. That same day he received an employee stock option for 187,000 shares vesting over four years and a new grant of 93,500 restricted stock units, also vesting over four years.

On January 31, 2026, 33,075 restricted stock units from a prior 2025 grant vested and converted into common stock, lifting his direct holdings to 135,821 shares. On February 2, 2026, he sold 26,837 shares at a weighted average price of $6.4369 solely to cover withholding taxes under a pre-arranged automatic sell-to-cover instruction, leaving 108,984 common shares held directly.

Positive

  • None.

Negative

  • None.
Insider Tan Kevin
Role CFO & Treasurer
Sold 26,837 shs ($173K)
Type Security Shares Price Value
Sale Common Stock 26,837 $6.4369 $173K
Exercise Restricted Stock Units 33,075 $0.00 --
Exercise Common Stock 33,075 $0.00 --
Exercise Performance Stock Units 56,646 $0.00 --
Grant/Award Employee Stock Option (Right to Buy) 187,000 $0.00 --
Grant/Award Restricted Stock Units 93,500 $0.00 --
Exercise Common Stock 56,646 $0.00 --
Holdings After Transaction: Common Stock — 108,984 shares (Direct); Restricted Stock Units — 99,225 shares (Direct); Performance Stock Units — 0 shares (Direct); Employee Stock Option (Right to Buy) — 187,000 shares (Direct)
Footnotes (1)
  1. Each performance stock unit ("PSUs") converts to common stock on a one-for-one basis. Each restricted stock unit ("RSUs") converts to common stock on a one-for-one basis. This sale was made to cover withholding taxes following the vesting of previously granted PSUs pursuant to a durable automatic sale instruction letter adopted by Mr. Tan on August 15, 2024 effecting the sell-to-cover election. The sale does not represent a discretionary trade by Mr. Tan. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.295 to $6.580, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) to this Form. The PSUs were granted on June 11, 2024 and provide for the vesting of 25% of the target number of underlying RSUs granted upon the achievement of each of four independent performance milestones predetermined by the Board ("Performance Milestones"), subject to the grantee's continued service with the Company (the "Approval Conditions"). The Performance Milestones are tied to the achievement of certain business objectives, as certified by the Board on specified evaluation dates, and are non-market and non-financial in nature. The performance criteria specified for the first Performance Milestone was determined to be met on January 29, 2026 (the "2026 Grant Date") resulting in the vesting of the PSUs as to 25% of the underlying shares. This option was granted on the 2026 Grant Date and vests over four years, with 25% of the original number of shares vesting on the first anniversary of the 2026 Grant Date and 2.0833% of the original number of shares monthly thereafter until the fourth such anniversary. The RSUs were granted on the 2026 Grant Date and vest over four years, with 25% of the original number of shares vesting on each anniversary of the 2026 Grant Date until the fourth such anniversary. On January 31, 2025 (the "2025 Grant Date"), the reporting person was granted 132,300 RSUs, with 25% of the original number of shares vesting on each anniversary of the 2025 Grant Date until the fourth such anniversary.
SEC Form 4
FORM 4 UNITED 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
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
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*
Tan Kevin

(Last) (First) (Middle)
C/O SOLID BIOSCIENCES INC.
500 RUTHERFORD AVENUE, THIRD FLOOR

(Street)
CHARLESTOWN MA 02129

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Solid Biosciences Inc. [ SLDB ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
CFO & Treasurer
3. Date of Earliest Transaction (Month/Day/Year)
01/29/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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)
Code V Amount (A) or (D) Price
Common Stock 01/29/2026 M 56,646 A (1) 102,746 D
Common Stock 01/31/2026 M 33,075 A (2) 135,821 D
Common Stock 02/02/2026 S 26,837(3) D $6.4369(4) 108,984 D
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Performance Stock Units (1) 01/29/2026 M 56,646 (5) (5) Common Stock 56,646 $0.00 0 D
Employee Stock Option (Right to Buy) $6.6 01/29/2026 A 187,000 (6) 01/29/2036 Common Stock 187,000 $0.00 187,000 D
Restricted Stock Units (2) 01/29/2026 A 93,500 (7) (7) Common Stock 93,500 $0.00 93,500 D
Restricted Stock Units (2) 01/31/2026 M 33,075 (8) (8) Common Stock 33,075 $0.00 99,225 D
Explanation of Responses:
1. Each performance stock unit ("PSUs") converts to common stock on a one-for-one basis.
2. Each restricted stock unit ("RSUs") converts to common stock on a one-for-one basis.
3. This sale was made to cover withholding taxes following the vesting of previously granted PSUs pursuant to a durable automatic sale instruction letter adopted by Mr. Tan on August 15, 2024 effecting the sell-to-cover election. The sale does not represent a discretionary trade by Mr. Tan.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.295 to $6.580, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) to this Form.
5. The PSUs were granted on June 11, 2024 and provide for the vesting of 25% of the target number of underlying RSUs granted upon the achievement of each of four independent performance milestones predetermined by the Board ("Performance Milestones"), subject to the grantee's continued service with the Company (the "Approval Conditions"). The Performance Milestones are tied to the achievement of certain business objectives, as certified by the Board on specified evaluation dates, and are non-market and non-financial in nature. The performance criteria specified for the first Performance Milestone was determined to be met on January 29, 2026 (the "2026 Grant Date") resulting in the vesting of the PSUs as to 25% of the underlying shares.
6. This option was granted on the 2026 Grant Date and vests over four years, with 25% of the original number of shares vesting on the first anniversary of the 2026 Grant Date and 2.0833% of the original number of shares monthly thereafter until the fourth such anniversary.
7. The RSUs were granted on the 2026 Grant Date and vest over four years, with 25% of the original number of shares vesting on each anniversary of the 2026 Grant Date until the fourth such anniversary.
8. On January 31, 2025 (the "2025 Grant Date"), the reporting person was granted 132,300 RSUs, with 25% of the original number of shares vesting on each anniversary of the 2025 Grant Date until the fourth such anniversary.
/s/ Kimberly Cornwell as attorney-in-fact for Kevin Tan 02/02/2026
** Signature of Reporting Person Date
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.

FAQ

What insider transactions did SLDB CFO Kevin Tan report on this Form 4?

Kevin Tan reported PSU and RSU vesting, new equity grants, and a tax-related share sale. Performance stock units and restricted stock units converted into common shares, new options and RSUs were granted, and a portion of shares was sold to cover withholding taxes under an automatic instruction.

How many Solid Biosciences (SLDB) shares did the CFO sell and at what price?

The CFO sold 26,837 shares of Solid Biosciences common stock at a weighted average price of $6.4369. The shares were sold in multiple trades between $6.295 and $6.580 per share, with full trade detail available on request as noted in the filing footnote.

Was the SLDB CFO’s February 2, 2026 share sale a discretionary trade?

No. The February 2, 2026 sale did not represent a discretionary trade by the CFO. It was executed to cover withholding taxes after PSU vesting, pursuant to a durable automatic sell-to-cover instruction letter adopted on August 15, 2024.

What new stock options did the Solid Biosciences CFO receive in January 2026?

On January 29, 2026, the CFO received an option covering 187,000 shares of common stock. The option vests over four years, with 25% vesting on the first anniversary of the 2026 grant date and 2.0833% monthly thereafter until the fourth anniversary.

What restricted stock unit grants are disclosed for the SLDB CFO?

The CFO received 93,500 RSUs on January 29, 2026 and previously 132,300 RSUs on January 31, 2025. Both RSU awards vest in four equal annual installments, with 25% vesting on each anniversary of their respective grant dates, subject to continued service.

How did performance stock units affect the SLDB CFO’s common stock holdings?

On January 29, 2026, 56,646 performance stock units converted one-for-one into common stock. This vesting followed certification that the first performance milestone was achieved, increasing his directly held common shares before later transactions reported in the same Form 4.