[Form 4] SiTime Corporation Insider Trading Activity

Rhea-AI Filing Summary

Vincent P. Pangrazio, EVP, Chief Legal Officer & Corporate Secretary of SiTime Corporation (SITM), reported the sale of 6,443 shares of common stock on 09/09/2025 under code S at a weighted average price of $246.16 per share (individual trade prices ranged from $245.00 to $249.50). After the sale he beneficially owns 52,612 shares, which include 42,868 shares issuable under previously reported unvested restricted stock units and performance-based restricted stock units. The filing indicates the transaction was covered by a Rule 10b5-1 plan.

Positive

• Transaction reported under a 10b5-1 plan, providing a pre-arranged, documented framework for the sale
• Complete disclosure of weighted average price and price range for the reported shares
• Detailed breakdown of unvested awards provided, including time-based and performance-based units

Negative

• Insider sold shares, which investors may view negatively depending on context
• Majority of remaining beneficial ownership is unvested equity, so current vested shareholding is materially lower than the headline number

Insights

Corporate Governance Expert

TL;DR: Insider sale disclosed under a 10b5-1 plan; substantial portion of remaining holdings are unvested RSUs/PSUs.

The sale was executed under transaction code S and the form marks a 10b5-1 trading plan, which signals pre-arranged disposition rather than opportunistic trading. The reporter retains 52,612 beneficially owned shares, but most (42,868) are unvested equity awards, including 25,581 performance-based units, which means actual current vested ownership is materially smaller. Disclosure is complete and conforms to Section 16 requirements.

Securities Analyst

TL;DR: Reported sale size is moderate and transparently disclosed; unvested performance awards may align executive incentives with stock performance.

6,443 shares sold at a weighted average of $246.16 represents a routine insider sale in isolation. The disclosure that 25,581 shares are performance-based RSUs highlights that a meaningful portion of potential future dilution or insider alignment depends on future stock-price performance. No derivative or option exercises are reported in this filing.

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^*

Pangrazio Vincent P

(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)
09/09/2025

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	09/09/2025		S		6,443	D	$246.16(1)	52,612(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 $245.00 to $249.50 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 42,868 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 17,287 restricted stock units that vest over time, and 25,581 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:

EVP, Chief Legal Officer & Corporate Secretary.

	Samsheer Ahamad, Attorney-in-fact	09/11/2025
	** 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.