[Form 4] SiTime Corporation Insider Trading Activity

Rhea-AI Filing Summary

SiTime Corporation insider report: The report shows that Ahamad Samsheer, SVP Finance and Chief Accounting Officer, sold 2,000 shares of SiTime common stock on 09/03/2025 at a weighted-average price of $226.57 per share. Following the sale, the reporting person beneficially owns 67,888 shares. That total includes 27,246 unvested units: 17,040 time-based restricted stock units and 10,206 performance-based restricted stock units that vest based on specified price performance conditions. The sale was reported as made pursuant to a Rule 10b5-1 plan and the form was signed by an attorney-in-fact on 09/08/2025.

Positive

• Sale executed under a Rule 10b5-1 plan, indicating prearranged transaction terms
• Detailed disclosure of unvested awards: 17,040 time-based RSUs and 10,206 performance-based RSUs
• Complete Form 4 compliance with signature by attorney-in-fact and required reporting fields populated

Negative

• Insider sold 2,000 shares, reducing direct beneficial ownership to 67,888 shares
• 10,206 performance-based RSUs vest only on specified price performance, creating potential uncertainty about future dilution

Insights

Financial Analyst

TL;DR: Routine insider sale under a 10b5-1 plan; small proportion of total holdings sold, disclosure is complete.

The filing documents a single sale of 2,000 shares at a weighted-average price of $226.57 under a 10b5-1 plan, leaving 67,888 shares beneficially owned. The disclosure of 27,246 unvested restricted units (17,040 time-based, 10,206 performance-based) is helpful for modeling potential dilution and future share release timing. This is a standard Form 4 disclosure and does not itself provide performance guidance or new financial data.

Corporate Governance Expert

TL;DR: Filing reflects compliance with Section 16 rules and use of an affirmative defense plan; signature executed by attorney-in-fact.

The registrant checked the box indicating transactions were pursuant to a 10b5-1 written plan, which suggests the sale was prearranged rather than opportunistic. The form identifies the reporting persons role as SVP Finance and Chief Accounting Officer and discloses the composition of unvested equity awards, supporting good governance transparency. The form is signed by an attorney-in-fact on 09/08/2025, meeting reporting formalities.

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^*

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)
09/03/2025

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	09/03/2025		S		2,000	D	$226.57(1)	67,888(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 $224.50 to $230.00 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 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	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 Ahamad Samsheer report for SITM?

The filing reports a sale of 2,000 shares of SiTime common stock on 09/03/2025 at a weighted-average price of $226.57 per share.

Was the sale by the insider part of a prearranged plan (10b5-1)?

Yes. The report indicates the transaction was made pursuant to a Rule 10b5-1 written plan (the related box is checked).

How many shares does the reporting person beneficially own after the sale?

After the reported transaction, the reporting person beneficially owns 67,888 shares of SiTime common stock.

What unvested equity awards are disclosed in the Form 4?

The filing discloses 27,246 unvested common stock issuable: 17,040 time-based restricted stock units and 10,206 performance-based restricted stock units.

Who signed the Form 4 and when?

The Form 4 was signed by Samsheer Ahamad, as Attorney-in-Fact on 09/08/2025.

Does the filing disclose exercise or derivative transactions?

No. The Form 4 shows only a non-derivative sale of common stock; Table II for derivatives contains no reported transactions.