[Form 4] SiTime Corporation Insider Trading Activity

Rhea-AI Filing Summary

SiTime Corporation (SITM) insider transaction summary: Executive Vice President Worldwide Sales and Business Development Lionel Bonnot reported a sale of 2,656 shares of SiTime common stock on 08/20/2025 at a reported price of $221.60 per share. After the sale, the reporting person beneficially owned 79,923 shares, which include an aggregate of 73,484 unvested restricted stock units and performance-based restricted stock units (27,932 time-vesting RSUs and 45,552 performance-based RSUs tied to absolute and relative price performance). The Form 4 was filed individually and signed by an attorney-in-fact on 08/22/2025.

Insights

Financial Analyst

TL;DR: Officer sold a small number of shares while retaining significant equity largely in unvested RSUs.

The reported sale of 2,656 shares at $221.60 reduces the officer's direct holdings but leaves total beneficial ownership at 79,923 shares, principally comprised of 73,484 unvested units. The disclosure clarifies the composition of holdings between time-based and performance-based RSUs, which may affect future realized ownership depending strictly on vesting and performance hurdles. This is a routine insider sale with no additional transactional context provided.

Corporate Governance Expert

TL;DR: Filing provides clear reporting of an officer sale and the nature of remaining equity holdings.

The Form 4 identifies the reporting person as an officer and describes the nature of indirect/unvested holdings, including performance conditions for a material portion of the units. The filing is complete in disclosing the mix of time-vested and performance-vested units; however, it does not include details on any trading plan or whether the sale was pre-scheduled. Based solely on the document, this appears to be a standard Section 16 disclosure.

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

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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).

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)
08/20/2025

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	08/20/2025		F		2,656	D	$221.6	79,923(1)	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. Includes an aggregate of 73,484 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 27,932 restricted stock units that vest over time, and 45,552 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	08/22/2025
	** 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 transaction did Lionel Bonnot report on Form 4 for SITM?

He reported a sale of 2,656 shares of SiTime common stock on 08/20/2025 at a price of $221.60 per share.

How many SITM shares does the reporting person beneficially own after the reported transaction?

79,923 shares beneficially owned following the reported sale.

What portion of the reported holdings are unvested RSUs?

73,484 shares are issuable pursuant to previously reported unvested restricted stock units and performance-based restricted stock units.

How are the unvested units categorized in the filing?

The filing discloses 27,932 time-vesting RSUs and 45,552 performance-based RSUs tied to absolute and relative price performance.

What is the reporting person's role at SiTime?

The filing identifies the reporting person as Executive Vice President, Worldwide Sales and Business Development.