[Form 4] SITIME Corp Insider Trading Activity

Rhea-AI Filing Summary

SITIME Corp (SITM) insider sale and current holdings. The company’s Executive Vice President & Chief Financial Officer reported a sale of 5,099 shares of common stock on 10/06/2025 at a price of $319 per share. After that transaction the reporting person beneficially owned 59,070 shares in total. The filing states an aggregate of 56,597 unvested units are included in that total: 40,008 restricted stock units that vest over time and 16,589 performance-based restricted stock units that vest based on specified absolute and relative share-price performance over various performance periods.

Positive

• Reporting person retains a substantial reported position of 59,070 shares after the sale
• Large portion of holdings (56,597 units) are unvested equity tied to time and performance, aligning the officer with long-term outcomes

Negative

• Officer sold 5,099 shares on 10/06/2025 at $319, which is a reduction in direct holdings
• 16,589 shares are performance-based RSUs and may not vest if performance targets are not met

Insights

Corporate Governance Analyst

Insider sale with substantial retained stake, many units remain unvested.

The reported sale of $319 per-share for 5,099 shares reduces the officer's direct holdings but leaves a reported beneficial position of 59,070 shares, which importantly includes 56,597 unvested units. Retained unvested RSUs and performance-based RSUs indicate ongoing alignment with long-term compensation mechanics.

Risks include the portion tied to 16,589 performance-based RSUs, which may not vest if performance targets are unmet; monitor future filings for vesting outcomes and any additional open-market transactions within the next 12 months.

Insider Trading/Market Impact Specialist

A single sale of 5,099 shares at $319 is unlikely to be market-moving but is material to the insider's portfolio.

The transaction code indicates a sale and the per-share price is $319, implying a notional value of the transaction (price times shares) that can be computed from the filing. Given the reported total beneficial ownership, the sale represents a partial liquidation of a direct holding rather than a full exit.

Watch for subsequent Section 16 filings or Rule 10b5-1 plan disclosures that would clarify whether future sales are planned; next 3-12 months filings will show any pattern.

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).

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^*

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)
10/06/2025

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	10/06/2025		S		5,099	D	$319	59,070(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	10/08/2025
	** 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 SITM insider Elizabeth Howe sell on 10/06/2025?

The filing reports a sale of 5,099 shares of SITIME Corp common stock on 10/06/2025 at a price of $319 per share.

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

After the reported sale the reporting person beneficially owned 59,070 shares in total.

How many unvested equity units are included in the reported holdings?

The filing states 56,597 unvested units are included: 40,008 time‑vesting RSUs and 16,589 performance‑based RSUs.

Do the performance-based units have specified conditions?

Yes. The 16,589 performance-based RSUs vest based on certain absolute and relative share-price performance over various performance periods.

Who signed the Form 4 and when was it signed?

The form shows signature by Samsheer Ahamad, as Attorney-in-Fact on 10/08/2025.