SiTime (NASDAQ: SITM) insider sells 4,126 shares in market trades

Rhea-AI Filing Summary

SiTime Corp executive Lionel Bonnot reported multiple transactions in company common stock. He completed open‑market sales totaling 4,126 shares on February 23–24, 2026 at weighted average prices around $406.48–$411.35 per share, with individual trades ranging from $398.48 to $410.40.

In addition, 3,869 shares were disposed of on February 20, 2026 to cover tax obligations through a share withholding transaction. After these moves, Bonnot directly held 80,274 shares of common stock. Footnote disclosure states he also has 77,553 unvested restricted stock and performance-based units, including 27,772 time‑vesting units and 49,781 units that vest based on the stock’s absolute and relative price performance.

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
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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^*

Bonnot Lionel

(Last) (First) (Middle)

C/O SITIME CORPORATION

5451 PATRICK HENRY DR.

(Street)

SANTA CLARA CA 95054

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SITIME Corp [ SITM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See Remarks

3. Date of Earliest Transaction (Month/Day/Year)
02/20/2026

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	02/20/2026		F		3,869	D	$406.97	84,400	D
Common Stock	02/23/2026		S		193	D	$411.35	84,207	D
Common Stock	02/24/2026		S		3,933	D	$406.48(1)	80,274(2)	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

Explanation of Responses:

1. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $398.48 to $410.40 per share, 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 this footnote.

2. Includes an aggregate of 77,553 shares of common stock issuable pursuant to previously reported restricted stock units and performance-based restricted stock units that have not vested. These unvested units include 27,772 restricted stock units that vest over time, and 49,781 performance-based restricted stock units that vest based on certain absolute and relative price performance of the issuer's common stock over various performance periods.

Remarks:

Executive Vice President, Worldwide Sales and Business Development

	Samsheer Ahamad, Attorney-in-fact	02/24/2026
	** 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).
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FAQ

What insider transactions did SiTime (SITM) executive Lionel Bonnot report?

Lionel Bonnot reported open-market sales of 4,126 SiTime shares on February 23–24, 2026, plus a 3,869-share tax-withholding disposition on February 20, 2026. All transactions involved SiTime common stock held directly.

At what prices did the SiTime (SITM) insider sell shares?

The reported weighted average sale prices were $406.48 and $411.35 per share. Footnotes state individual trades occurred in ranges from $398.48 to $410.40 per share, all in open-market transactions for SiTime common stock.

How many SiTime (SITM) shares does Lionel Bonnot hold after these Form 4 transactions?

After the reported sales and tax-withholding disposition, Lionel Bonnot directly owns 80,274 shares of SiTime common stock. This figure reflects his remaining direct holdings immediately following the February 2026 transactions disclosed in the Form 4 filing.

What portion of the SiTime (SITM) insider’s transactions were for tax withholding?

On February 20, 2026, 3,869 shares of SiTime common stock were disposed of as a tax-withholding transaction. The Form 4 identifies this as a code F disposition, meaning shares were delivered to satisfy tax obligations rather than sold in the open market.

What unvested equity awards does the SiTime (SITM) insider still have?

Footnotes disclose Bonnot holds 77,553 unvested units, including 27,772 restricted stock units vesting over time and 49,781 performance-based units. The performance awards vest only if SiTime’s stock meets specified absolute and relative price performance conditions over defined periods.

Is the SiTime (SITM) insider sale described as open-market or private?

The Form 4 describes Bonnot’s two sale transactions as open-market or private transactions under code S. The filing also clarifies that reported prices are weighted averages across multiple trades within specified price ranges for SiTime common stock.