[Form 4] SiTime Corporation Insider Trading Activity

Rhea-AI Filing Summary

Elizabeth A. Howe, the Executive Vice President and Chief Financial Officer of SiTime Corporation (SITM), reported a sale of 2,904 shares of the company's common stock on 08/20/2025 at a reported price of $221.60 per share. After the transaction she beneficially owns 68,570 shares in total, which the filing clarifies includes 56,597 unvested restricted stock units: 40,008 time-based RSUs and 16,589 performance-based RSUs that vest based on specified price performance conditions. The Form 4 was submitted and signed by an attorney-in-fact on 08/22/2025.

Insights

Financial Analyst

TL;DR: Routine officer share disposition; small portion of total holdings sold, core ownership largely retained via unvested RSUs and PSUs.

The reported disposal of 2,904 shares at $221.60 is a straightforward non-derivative sale by the company's CFO. The filing specifies total beneficial ownership of 68,570 shares following the sale, of which 56,597 are unvested RSUs/PSUs, including 40,008 time-based and 16,589 performance-based units. This indicates that while some liquid shares were sold, a substantial economic interest remains tied to future vesting and performance conditions. The disclosure is complete regarding quantities, prices, and the composition of unvested units; there are no derivative transactions reported.

Corporate Governance Expert

TL;DR: Standard Section 16 reporting; sale disclosed and governance stake composition clarified by RSU/PSU detail.

The Form 4 meets Section 16 disclosure requirements by reporting an officer sale and post-transaction holdings. The detailed breakdown that 16,589 shares are performance-based restricted units is useful for governance assessment because those shares vest only upon specified price performance. The filing was executed via attorney-in-fact, which is documented. No indications of atypical trading codes or derivatives are present. This is a routine insiders filing with clear documentation of unvested awards.

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).

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^*

Howe Elizabeth A.

(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)
	EVP, Chief Financial Officer

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		2,904	D	$221.6	68,570(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 56,597 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 40,008 restricted stock units that vest over time, and 16,589 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:

	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 did Elizabeth A. Howe report in the Form 4 for SITM?

She reported selling 2,904 common shares on 08/20/2025 at $221.60 per share and retaining 68,570 beneficially owned shares.

How many unvested restricted stock units does the Form 4 list for SITM's reporting person?

The filing lists 56,597 unvested units: 40,008 time-based RSUs and 16,589 performance-based RSUs.

Does the Form 4 for SITM report any derivative transactions?

No. The filing shows only a non-derivative sale of common stock and no derivative securities or options.

When was the transaction and when was the Form 4 signed?

The transaction date was 08/20/2025 and the Form 4 was signed by an attorney-in-fact on 08/22/2025.

What is the reported price per share for the sale in the SITM Form 4?

The reported sale price was $221.60 per share.