[Form 4] SITIME Corp Insider Trading Activity

Rhea-AI Filing Summary

Rajesh Vashist, SITIME Corp's Chief Executive Officer and a director, reported a sale of 10,000 shares of common stock on 09/15/2025 at $277 per share and continues to beneficially own 453,208 shares following the transaction. The total holdings reported include 280,158 shares issuable under previously reported restricted stock units that remain unvested, comprised of 77,605 time‑vesting RSUs and 202,553 performance‑based RSUs tied to absolute and relative stock price performance. Additional indirect holdings are reported through family trusts and an LLC for amounts described in the footnotes.

Positive

• Substantial retained ownership: Reporting person beneficially owns 453,208 shares after the sale, indicating meaningful economic stake.
• Incentive alignment: 280,158 unvested RSUs (including 202,553 performance RSUs) tie compensation to future stock performance and time vesting.

Negative

• Insider sale disclosed: Sale of 10,000 shares at $277 was executed, which may attract market attention despite being a modest portion of holdings.

Insights

Securities Analyst

TL;DR: Insider sale disclosed but CEO retains substantial economic and incentive alignment through large direct and unvested holdings.

The 10,000‑share sale at $277 per share is a routine insider transaction disclosed on Form 4. Post‑transaction beneficial ownership of 453,208 shares, including 280,158 unvested RSUs, indicates continued alignment with shareholders because a majority of those units are subject to vesting and performance conditions. The sale represents a modest portion of reported holdings (~2.2%), so the direct financing or dilution impact is negligible. Investors should note the mix of time‑based and performance‑based awards which tie executive compensation to future stock performance.

Corporate Governance Expert

TL;DR: Governance signals are mixed but lean neutral: meaningful retained stake and performance RSUs support long‑term focus despite a disclosed share sale.

As both CEO and director, the reporting person maintains significant beneficial ownership and retains a large number of unvested, performance‑contingent awards, which is a governance positive for alignment. The disclosure of indirect holdings via family trusts and an LLC is standard and shows consolidated control reporting. The open items for governance review are routine: ensure clear reporting of vesting schedules and performance metrics for the 202,553 performance RSUs so stakeholders can assess incentive design and potential dilution upon vesting.

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).

1. Name and Address of Reporting Person^*

VASHIST RAJESH

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2025

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	09/15/2025		S		10,000	D	$277	453,208(1)	D
Common Stock								1,809	I	See Footnote(2)
Common Stock								1,809	I	See Footnote(3)
Common Stock								24,781	I	See Footnote(4)

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 280,158 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 77,605 restricted stock units that vest over time, and 202,553 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.

2. The reportable securities are owned directly by Aldebran Rajesh Family Dynasty Trust DTD 09/23/2021, of which the Reporting Person is one of the managers and has voting and investment power over the shares.

3. The reportable securities are owned directly by Aldebran Rohini Family Dynasty Trust DTD 09/23/2021, of which the Reporting Person is one of the managers and has voting and investment power over the shares.

4. The reportable securities are owned directly by Aldebran Constellation LLC, of which the Reporting Person is one of the managers and has voting and investment power over the shares.

Remarks:

	Samsheer Ahamad, Attorney-in-fact	09/17/2025
	** 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.
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FAQ

What transaction did SITM insider Rajesh Vashist report on Form 4?

The Form 4 reports a sale of 10,000 shares of SITM common stock on 09/15/2025 at $277 per share.

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

The reporting person beneficially owns 453,208 shares following the reported transaction.

How many unvested restricted stock units does the CEO hold at SITM?

There are 280,158 shares issuable under unvested RSUs: 77,605 time‑vesting RSUs and 202,553 performance‑based RSUs.

Are there indirect holdings reported for SITM insider filings?

Yes. The filing discloses indirect ownership through two family trusts and an LLC as described in the footnotes.

Does this Form 4 indicate any derivative transactions or option exercises?

No derivative securities or option exercises are reported in Table II of this Form 4.