[Form 4] SiTime Corporation Insider Trading Activity

Rhea-AI Filing Summary

SiTime Corporation (SITM) officer reported a sale of common stock. The reporting person, identified as SVP Finance and Chief Accounting Officer, executed a disposition of 2,133 shares on 08/20/2025 at a reported price of $221.60 per share, leaving total beneficial ownership of 69,888 shares. The filing also discloses 27,246 unvested units previously reported: 17,040 time-based restricted stock units and 10,206 performance-based restricted stock units that vest subject to timing and price-performance conditions. The Form 4 is signed by an attorney-in-fact on 08/22/2025.

Positive

• Transparent disclosure of insider sale details including date, price, and post-transaction beneficial ownership
• Detailed breakdown of unvested equity: 17,040 time-based RSUs and 10,206 performance-based RSUs, clarifying vesting structure

Negative

• Disposition of 2,133 shares reduced direct beneficial ownership to 69,888 shares
• 10,206 performance-based units remain unvested and contingent on stock price performance, delaying potential alignment from those shares

Insights

Financial Analyst

TL;DR: A company officer sold a small portion of holdings; remaining ownership includes substantial unvested equity tied to performance.

The reported sale of 2,133 shares at $221.60 reduced the officer's beneficial holdings to 69,888 shares. The disclosure that 27,246 shares remain unvested, including 10,206 performance-based units, is important because a material portion of total holdings is subject to vesting and performance conditions rather than immediate transferability. This is a routine Section 16 disclosure of insider activity and provides transparency into executive compensation and potential future share releases.

Corporate Governance Expert

TL;DR: Filing is a standard insider disclosure showing a disposition and detailed breakdown of unvested equity.

The Form 4 properly reports the disposition date, price, and post-transaction beneficial ownership, and it specifies the composition of unvested awards (time-based and performance-based RSUs). The signature by an attorney-in-fact is noted. There are no disclosures of option exercises, derivative transactions, or other atypical governance events in this filing.

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).

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^*

Ahamad Samsheer

(Last) (First) (Middle)

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		2,133	D	$221.6	69,888(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 27,246 shares of common stock issuable pursuant to previously reported restricted stock units and performance-based restricted stock units and that have not vested. These unvested units include 17,040 restricted stock units that vest over time, and 10,206 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:

SVP Finance and Chief Accounting Officer

	Samsheer Ahamad, as 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 SiTime (SITM) report on the Form 4?

The filing reports a disposition of 2,133 common shares on 08/20/2025 at a price of $221.60 per share.

How many shares does the reporting officer beneficially own after the transaction?

The reporting person beneficially owns 69,888 shares following the reported transaction.

Does the Form 4 disclose unvested equity for the reporting person?

Yes. It discloses 27,246 unvested units: 17,040 time-based restricted stock units and 10,206 performance-based restricted stock units.

Who is the reporting person and what is their role at SiTime?

The reporting person is identified as the SVP Finance and Chief Accounting Officer of SiTime.

When was the Form 4 signed and by whom?

The Form 4 bears a signature dated 08/22/2025 by Samsheer Ahamad acting as attorney-in-fact.