SiTime director granted 390 RSUs of common stock

Heckart Christine reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Heckart Christine reported acquisition or exercise transactions in this Form 4 filing.

SiTime Corp director Christine Heckart reported a new equity compensation grant and updated her share holdings. She received 390 shares of common stock through a restricted stock unit award at $0.00 per share, classified as a grant or award rather than an open-market purchase.

The restricted stock unit award vests fully on May 20, 2027. After this grant, Heckart holds 2,080 shares of common stock directly, which includes the 390 unvested shares from this award. She also has indirect ownership of 9,305 shares through the H D & Christine Heckart 2014 Family Trust, where she serves as a manager with voting and investment power.

Insider Trade Summary

Grant/Award: 390 shares

Grant/Award 2 txns

Insider Heckart Christine

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	390	$0.00	$0.00
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 2,080 shares (Direct); Common Stock — 9,305 shares (Indirect, See Footnote)

Footnotes (3)

1. F1. Restricted stock unit award vests fully on May 20, 2027.
2. F2. Includes an aggregate of 390 shares of common stock issuable pursuant to the restricted stock unit award reported pursuant to this Form 4 that has not yet vested.
3. F3. The reportable securities are owned directly by H D & Christine Heckart 2014 Fam Trust UAD 2/14/2014, of which the Reporting Person is one of the managers and has voting and investment power over the shares

Key Figures

RSU grant size: 390 shares Grant price: $0.00 per share RSU vesting date: May 20, 2027 +2 more

5 metrics

RSU grant size 390 shares Restricted stock unit award of common stock

Grant price $0.00 per share Equity compensation, not open-market purchase

RSU vesting date May 20, 2027 Full vesting of 390-share RSU award

Direct holdings after grant 2,080 shares Includes 390 unvested RSU shares

Indirect holdings via trust 9,305 shares Held by H D & Christine Heckart 2014 Family Trust

Key Terms

restricted stock unit, indirect ownership, grant, award, or other acquisition

3 terms

restricted stock unit financial

"Restricted stock unit award vests fully on May 20, 2027."

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

indirect ownership financial

"The reportable securities are owned directly by H D & Christine Heckart 2014 Fam Trust..."

grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did SiTime (SITM) director Christine Heckart report in this Form 4?

She reported a grant of 390 restricted stock units of SiTime common stock at $0.00 per share. The filing also updates her direct holdings to 2,080 shares and indirect holdings to 9,305 shares through a family trust.

How many SiTime (SITM) shares were granted to Christine Heckart?

Christine Heckart received 390 shares of SiTime common stock via a restricted stock unit award. These shares were granted at $0.00 per share as equity compensation and will only be delivered once the vesting conditions are met.

When do Christine Heckart’s new SiTime (SITM) restricted stock units vest?

The 390 restricted stock units vest fully on May 20, 2027. This means she will receive the underlying SiTime common shares on that date, assuming continued service and satisfaction of any applicable vesting conditions described for the award.

What are Christine Heckart’s total direct and indirect SiTime (SITM) holdings now?

After the grant, she holds 2,080 SiTime shares directly, including the 390 unvested restricted stock units. She also has indirect ownership of 9,305 shares through the H D & Christine Heckart 2014 Family Trust, where she has voting and investment power.

Was this SiTime (SITM) Form 4 transaction an open-market buy or sale?

No, the Form 4 shows a grant or award acquisition of 390 shares coded as “A”, not an open-market trade. It reflects equity compensation, not a discretionary purchase or sale in the public market by Christine Heckart.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/02/2026 - 08:52 PM Learn about SEC filing dates

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^*

Heckart Christine

(Last) (First) (Middle)

C/O SITIME CORPORATION

5451 PATRICK HENRY DR.

(Street)

SANTA CLARA CALIFORNIA 95054

(City) (State) (Zip)

UNITED STATES

(Country)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	06/01/2026		A		390(1)	A	$0	2,080(2)	D
Common Stock								9,305	I	See Footnote(3)

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. Restricted stock unit award vests fully on May 20, 2027.

2. Includes an aggregate of 390 shares of common stock issuable pursuant to the restricted stock unit award reported pursuant to this Form 4 that has not yet vested.

3. The reportable securities are owned directly by H D & Christine Heckart 2014 Fam Trust UAD 2/14/2014, 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	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)