[Form 4] SiTime Corporation Insider Trading Activity

Rhea-AI Filing Summary

Vashist Rajesh, Chief Executive Officer and Director of SiTime Corporation (SITM), reported an insider transaction dated 08/20/2025. The Form 4 shows a disposition of 5,555 shares of common stock sold at $221.6 per share. After the reported sale, the filing lists 465,208 shares owned directly. The filing also discloses 1,809, 1,809 and 24,781 shares held indirectly via trusts and an LLC managed by the reporting person. In addition, the report includes 280,158 shares issuable under previously reported unvested restricted stock units and performance-based restricted stock units, of which 77,605 vest over time and 202,553 vest based on specified absolute and relative price performance conditions. The Form is signed by an attorney-in-fact on 08/22/2025.

Positive

• Transparency: Filing discloses both direct and indirect holdings and explains the entities holding indirect shares
• Substantial unvested equity disclosed: 280,158 unvested restricted stock units (including 202,553 performance-based units) are itemized

Negative

• Disposition reported: Sale of 5,555 shares at $221.6 on 08/20/2025
• Performance-based concentration: 202,553 RSUs vest only upon meeting certain absolute and relative price performance conditions

Insights

Securities Analyst

TL;DR: Insider sold a small parcel relative to total holdings; substantial unvested performance RSUs remain.

The reported sale of 5,555 shares at $221.6 represents a modest disposition versus a direct holding of 465,208 shares. The filing also documents material unvested equity: 280,158 shares tied to restricted stock units, including 202,553 performance-based units that vest only if certain price conditions are met. From a market-impact perspective this disclosure is routine and does not alone indicate a material change in control or financing.

Corporate Governance Expert

TL;DR: Disclosure is complete on ownership structure and unvested awards; indirect holdings are via trusts/LLC managed by the reporting person.

The Form 4 clearly separates direct and indirect holdings and explains the nature of indirect ownership through two family dynasty trusts and an LLC where the reporting person is a manager with voting and investment power. The large block of unvested and performance-based units is disclosed, which is important for understanding potential future dilution and incentive alignment. No amendments or additional qualifiers are provided.

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).

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)
08/20/2025

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	08/20/2025		F		5,555	D	$221.6	465,208(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	08/22/2025
	** 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 Vashist Rajesh report for SITM?

The Form 4 reports a sale of 5,555 shares of SiTime common stock on 08/20/2025 at $221.6 per share.

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

The filing shows 465,208 shares beneficially owned directly following the reported transaction.

Does Vashist Rajesh have indirect holdings in SITM?

Yes. The report lists indirect holdings of 1,809, 1,809 and 24,781 shares held by two family dynasty trusts and an LLC managed by the reporting person.

Are there unvested or performance-based awards disclosed in the Form 4?

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

Who signed the Form 4 and when?

The Form 4 is signed by Samsheer Ahamad, Attorney-in-fact on 08/22/2025 on behalf of the reporting person.