[Form 4] SITIME Corp Insider Trading Activity

Rhea-AI Filing Summary

Elizabeth A. Howe, EVP and Chief Financial Officer of SITIME Corp (SITM), reported a sale of 901 shares of common stock on 09/24/2025 at a price of $319 per share. After the transaction she beneficially owns 64,169 shares in total.

The reported beneficial ownership includes an aggregate of 56,597 shares issuable under previously reported restricted stock units that have not vested: 40,008 time‑vesting restricted stock units and 16,589 performance‑based restricted stock units that vest based on specified absolute and relative price performance conditions over various performance periods. The Form 4 was signed by an attorney‑in‑fact on 09/26/2025.

Positive

• Comprehensive disclosure of post‑transaction beneficial ownership (64,169 shares) including unvested awards
• Significant retained unvested equity (56,597 RSUs), aligning executive compensation with future company performance

Negative

• Insider sale of 901 shares was reported, reducing immediate shareholdings

Insights

Financial Analyst

TL;DR: Insider sold a small block while retaining significant unvested equity, indicating compensation tied to future stock performance.

The disclosure documents a 901‑share sale at $319 and total beneficial ownership of 64,169 shares. Most of the reported position (56,597 shares) consists of unvested restricted stock units, including 16,589 performance‑based RSUs subject to price performance metrics. For investors, the mix of time‑based and performance‑based awards highlights continued alignment of executive compensation with future share price outcomes. No further financial metrics or intent behind the sale are provided in the filing.

Corporate Governance Expert

TL;DR: Form 4 shows routine reporting of an executive sale and ongoing equity incentives governed by vesting and performance conditions.

The filing identifies the reporting person as an EVP and CFO and discloses both time‑vesting and performance‑vesting equity awards totaling 56,597 unvested units. The presence of performance‑based RSUs suggests governance structures tying executive pay to stock performance. The sale of 901 shares is recorded but the filing contains no information on trading plan, preclearance, or intent. Signature by an attorney‑in‑fact is noted on 09/26/2025.

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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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).

1. Name and Address of Reporting Person^*

Howe Elizabeth A.

(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)
	EVP, Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/24/2025

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	09/24/2025		S		901	D	$319	64,169(1)	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. Includes an aggregate of 56,597 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 40,008 restricted stock units that vest over time, and 16,589 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:

	Samsheer Ahamad, as Attorney-in-Fact	09/26/2025
	** 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 Elizabeth A. Howe report on Form 4 for SITM?

She reported a sale of 901 shares of SITIME Corp common stock on 09/24/2025 at a price of $319 per share.

How many SITM shares does Elizabeth Howe beneficially own after the reported transaction?

The Form 4 reports total beneficial ownership of 64,169 shares following the transaction.

How many unvested restricted stock units are included in the reported holdings?

The filing states 56,597 shares are issuable under previously reported unvested restricted stock units, comprising 40,008 time‑vesting RSUs and 16,589 performance‑based RSUs.

Do the performance‑based RSUs vest automatically?

No. The Form 4 specifies 16,589 performance‑based RSUs vest based on certain absolute and relative price performance of the issuer's common stock over various performance periods.

When was the Form 4 signed and by whom?

The filing shows it was signed by Samsheer Ahamad, as Attorney‑in‑Fact on 09/26/2025.