[Form 4] SiTime Corporation Insider Trading Activity

Rhea-AI Filing Summary

Fariborz Assaderaghi, Executive Vice President, Engineering & Technology at SiTime Corporation (SITM), reported a sale of common stock on 09/04/2025. The filing discloses the sale of 3,000 shares at a weighted average price of $231.75 per share, reported with transaction code "S."

The report shows 90,433 shares beneficially owned following the sale, which includes 87,670 shares issuable under previously reported unvested restricted stock units and performance-based restricted stock units (40,650 time-vesting RSUs and 47,020 performance-based RSUs). A 10b5-1 plan box is checked.

Positive

• Transaction disclosed under Section 16, meeting required insider reporting rules
• 10b5-1 plan box checked, indicating the sale was reported as executed pursuant to a written plan
• Detailed breakdown provided of unvested restricted stock units and performance-based restricted stock units (40,650 time-vesting; 47,020 performance-based)

Negative

• Executive sold 3,000 shares, reducing direct ownership by that amount
• Large portion of reported ownership (87,670 shares) consists of unvested RSUs and performance-based RSUs, limiting immediately liquid holdings

Insights

Financial Analyst

TL;DR: Insider sale of 3,000 shares at $231.75; majority of remaining position is unvested RSUs.

The Form 4 reports a straightforward disposition by an executive officer: 3,000 common shares sold on 09/04/2025 at a weighted average price of $231.75. Post-transaction beneficial ownership is 90,433 shares, but 87,670 of those are unvested RSUs and performance-based RSUs. This means the executives immediately liquid stake is limited relative to the total reported figure. The filing also indicates the transaction was consistent with a 10b5-1 plan, which can reduce potential insider trading timing concerns.

Corporate Governance Expert

TL;DR: Disclosure follows Section 16 reporting; use of 10b5-1 plan is noted and signature was by attorney-in-fact.

The Form 4 is filed under Section 16 and discloses that the reporting person is an officer. The document indicates the transaction was made pursuant to a plan intended to satisfy Rule 10b5-1(c). The signature on the form is by an attorney-in-fact dated 09/08/2025. The filing clearly itemizes unvested time-based and performance-based equity, which is useful for governance transparency regarding executive compensation structure.

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^*

Assaderaghi Fariborz

(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)
09/04/2025

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	09/04/2025		S		3,000	D	$231.75(1)	90,433(2)	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. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $231.00 to $232.25 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

2. Includes an aggregate of 87,670 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 40,650 restricted stock units that vest over time, and 47,020 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, Engineering & Technology

	Samsheer Ahamad, Attorney-in-fact	09/08/2025
	** 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 transaction did Fariborz Assaderaghi report on Form 4 for SITM?

The filing reports a sale of 3,000 shares of SiTime common stock on 09/04/2025 at a weighted average price of $231.75 per share.

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

The Form 4 reports 90,433 shares beneficially owned following the reported sale.

How many of the reported shares are unvested or performance-based?

The filing discloses 87,670 shares issuable pursuant to previously reported unvested restricted stock units and performance-based restricted stock units: 40,650 time-vesting RSUs and 47,020 performance-based RSUs.

Was the sale reported as part of a 10b5-1 plan?

Yes. The Form 4 indicates the transaction was made pursuant to a plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Who signed the Form 4 and when was it signed?

The form is signed by Samsheer Ahamad, Attorney-in-fact with a signature date of 09/08/2025.