[Form 4] SITIME Corp Insider Trading Activity

Rhea-AI Filing Summary

Rajesh Vashist, SITIME Corp (SITM) reported insider transactions showing two open-market sales of common stock totaling 2,000 shares on 10/01/2025 at prices of approximately $293 and $295. After those sales, Mr. Vashist directly beneficially owned 451,208 shares and additionally held indirect ownership stakes through trusts and an LLC, bringing reported beneficial ownership to a combined position that includes 452,208 shares direct and several indirect holdings.

The filing also discloses 280,158 unvested restricted stock units (including 202,553 performance-based units and 77,605 time-based units) that remain outstanding and could dilute or convert to shares upon vesting when performance or time conditions are met.

Insights

Insider Transactions Analyst

TL;DR: CEO sold 2,000 shares on 10/01/2025, retaining a substantial direct stake.

Two open-market sales totaling 2,000 shares were executed at roughly $293 and $295. After the sales, the reporting person still held 451,208 shares directly, indicating continued significant ownership.

This level of retained direct and indirect ownership suggests the transactions were modest relative to overall holdings; the filing does not state a reason for the sales.

Compensation & Dilution Specialist

TL;DR: 280,158 unvested RSUs disclosed, 202,553 tied to performance metrics.

The report shows 280,158 restricted stock units unvested, of which 202,553 are performance-based and vest only if specified stock-price targets or relative performance conditions are met. These units represent potential future dilution if and when performance vesting criteria are satisfied.

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).

1. Name and Address of Reporting Person^*

VASHIST RAJESH

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

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	10/01/2025		S		1,000	D	$293	452,208	D
Common Stock	10/01/2025		S		1,000	D	$295	451,208(1)	D
Common Stock								1,809	I	See Footnote(2)
Common Stock								1,809	I	See Footnote(3)
Common Stock								24,781	I	See Footnote(4)

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 280,158 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 77,605 restricted stock units that vest over time, and 202,553 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.

2. The reportable securities are owned directly by Aldebran Rajesh Family Dynasty Trust DTD 09/23/2021, of which the Reporting Person is one of the managers and has voting and investment power over the shares.

3. The reportable securities are owned directly by Aldebran Rohini Family Dynasty Trust DTD 09/23/2021, of which the Reporting Person is one of the managers and has voting and investment power over the shares.

4. The reportable securities are owned directly by Aldebran Constellation LLC, of which the Reporting Person is one of the managers and has voting and investment power over the shares.

Remarks:

	Samsheer Ahamad, Attorney-in-fact	10/02/2025
	** 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 transactions did SITM CEO Rajesh Vashist report?

The filing reports two open-market sales of common stock totaling 2,000 shares executed on 10/01/2025 at about $293 and $295 per share.

How many SITM shares does Rajesh Vashist own after the transactions?

After the reported sales, Mr. Vashist directly beneficially owned 451,208 shares and had additional indirect holdings reported, with a referenced direct total of 452,208 in one line.

Are there unvested equity awards disclosed in the Form 4?

Yes. The filing discloses 280,158 unvested restricted stock units, including 202,553 performance-based RSUs and 77,605 time-based RSUs.

Does the filing explain why the shares were sold?

No. The Form 4 lists the sales and prices but does not state a reason for the transactions.

Are any shares owned indirectly by trusts or entities?

Yes. The filing shows indirect direct ownership through Aldebran Rajesh Family Dynasty Trust, Aldebran Rohini Family Dynasty Trust, and Aldebran Constellation LLC, where the reporting person is a manager with voting and investment power.