[Form 4] SITIME Corp Insider Trading Activity

Rhea-AI Filing Summary

SiTime Corporation (SITM) CEO Form 4 insider filing reports that the Chief Executive Officer, who is also a director, disposed of 3,599 shares of common stock on 11/20/2025 in a transaction coded "F" at a price of $252.76 per share, typically indicating shares withheld to cover taxes on equity awards. Following this transaction, the CEO directly holds 435,609 shares of common stock.

The filing also discloses indirect ownership of 1,809 shares held by the Aldebran Rajesh Family Dynasty Trust, 1,809 shares held by the Aldebran Rohini Family Dynasty Trust, and 24,781 shares held by Aldebran Constellation LLC, over which the CEO has voting and investment power. In addition, 273,062 shares of common stock are issuable from previously reported unvested restricted stock units and performance-based restricted stock units, consisting of 70,509 time-based units and 202,553 performance-based units tied to absolute and relative stock price performance over various periods.

Insights

Equity compensation and insider-transactions analyst

Routine CEO tax-withholding sale; large equity stake and unvested awards remain.

This Form 4 shows the SiTime CEO disposed of 3,599 shares of common stock on 11/20/2025 at $252.76 via a transaction coded "F." Code F typically denotes shares withheld by the issuer to cover tax obligations on vesting equity, which is generally administrative rather than discretionary selling in the open market. After this event, the CEO still directly owns 435,609 common shares, maintaining a substantial equity position.

The footnotes highlight significant unvested equity: 273,062 shares issuable from restricted stock units and performance-based restricted stock units, with 70,509 vesting over time and 202,553 contingent on absolute and relative stock price performance over various periods. The filing also notes indirect holdings through the Aldebran Rajesh and Rohini Family Dynasty Trusts (1,809 shares each) and Aldebran Constellation LLC (24,781 shares), where the CEO has voting and investment power. These details indicate sizeable ongoing exposure to SiTime’s share performance, with future vesting tied explicitly to stock price outcomes.

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^*

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)
11/20/2025

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	11/20/2025		F		3,599	D	$252.76	435,609(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 273,062 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 70,509 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	11/24/2025
	** 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 transaction did SiTime (SITM) report in this Form 4?

The Form 4 reports that the Chief Executive Officer, who is also a director, disposed of 3,599 shares of SiTime common stock on 11/20/2025 in a transaction coded "F" at $252.76 per share.

How many SiTime (SITM) shares does the CEO own after the reported transaction?

After the reported transaction, the CEO directly owns 435,609 shares of SiTime common stock, as stated in the beneficial ownership column.

What indirect SiTime (SITM) shareholdings are disclosed in this Form 4?

The filing lists 1,809 shares held by the Aldebran Rajesh Family Dynasty Trust, 1,809 shares held by the Aldebran Rohini Family Dynasty Trust, and 24,781 shares held by Aldebran Constellation LLC, with the CEO having voting and investment power over these shares.

What unvested equity awards does the SiTime (SITM) CEO have outstanding?

The CEO has 273,062 shares of common stock issuable from previously reported unvested awards, including 70,509 restricted stock units that vest over time and 202,553 performance-based restricted stock units that vest based on certain absolute and relative stock price performance measures over various periods.

What does transaction code "F" mean in the SiTime (SITM) Form 4?

Transaction code "F" generally indicates a share disposition related to the payment of tax liability by withholding shares upon the vesting of equity awards, rather than an open-market sale decision.

What roles does the reporting person hold at SiTime (SITM)?

The reporting person is disclosed as both a Director and an Officer, serving as the company’s Chief Executive Officer.