SiTime director gifts 18,610 company shares

SiTime Corp director Christine Heckart reported gifting 18,610 shares of common stock.

Rhea-AI Filing Summary

SiTime Corp director Christine Heckart reported gifting 18,610 shares of common stock. On May 14, 2026, she made bona fide gifts, including 9,305 shares transferred to the H D & Christine Heckart 2014 Family Trust, where she and her immediate family are beneficiaries and she remains the beneficial owner.

After these gifts, she holds 1,690 shares directly, which include 1,290 shares issuable under an unvested restricted stock unit award, and 9,305 shares indirectly through the family trust, over which she has voting and investment power.

Insider Trade Summary

18,610 shares gifted

Gift 2 txns

Insider Heckart Christine

Role Director

Type	Security	Shares	Price	Value
Gift	Common Stock	9,305	$0.00	$0.00
Gift	Common Stock	9,305	$0.00	$0.00

Holdings After Transaction: Common Stock — 1,690 shares (Direct); Common Stock — 9,305 shares (Indirect, See Footnote)

Footnotes (3)

1. F1. On May 14, 2026, the Reporting Person made a bona fide gift for estate planning purposes of 9,305 shares of the Issuer's common stock to H D & Christine Heckart 2014 Fam Trust UAD 2/14/2014, of which the Reporting Person is one of the managers. The Reporting Person and members of her immediate family are the sole beneficiaries of the trust. The Reporting Person remains the beneficial owner of the shares.
2. F2. Includes an aggregate of 1,290 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

Total shares gifted: 18,610 shares Shares gifted to family trust: 9,305 shares Direct holdings after gifts: 1,690 shares +2 more

5 metrics

Total shares gifted 18,610 shares Aggregate bona fide gifts on May 14, 2026

Shares gifted to family trust 9,305 shares Transferred to H D & Christine Heckart 2014 Fam Trust

Direct holdings after gifts 1,690 shares Common stock directly owned following transactions

Unvested RSUs included 1,290 shares Shares issuable under restricted stock unit award, not yet vested

Indirect holdings after gifts 9,305 shares Common stock held by the 2014 Family Trust

Key Terms

bona fide gift, restricted stock unit, beneficial owner, voting and investment power, +1 more

5 terms

bona fide gift financial

"On May 14, 2026, the Reporting Person made a bona fide gift for estate planning purposes of 9,305 shares..."

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

restricted stock unit financial

"Includes an aggregate of 1,290 shares of common stock issuable pursuant to the restricted stock unit award..."

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.

beneficial owner financial

"The Reporting Person and members of her immediate family are the sole beneficiaries of the trust. The Reporting Person remains the beneficial owner of the shares."

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

voting and investment power financial

"the Reporting Person is one of the managers and has voting and investment power over the shares."

family trust financial

"to H D & Christine Heckart 2014 Fam Trust UAD 2/14/2014, of which the Reporting Person is one of the managers."

FAQ

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

What insider transaction did SiTime (SITM) director Christine Heckart report?

Christine Heckart reported bona fide gifts of 18,610 shares of SiTime common stock. The transactions occurred on May 14, 2026 and were filed as code G gifts, meaning no sale proceeds or purchase prices were involved.

How many SiTime (SITM) shares did Christine Heckart transfer to her family trust?

She gifted 9,305 shares of SiTime common stock to the H D & Christine Heckart 2014 Family Trust. She is a manager of the trust, and she and her immediate family are its sole beneficiaries, so she remains the beneficial owner of those shares.

What are Christine Heckart’s SiTime (SITM) holdings after the reported gifts?

After the gifts, she holds 1,690 shares directly and 9,305 shares indirectly via the family trust. The direct holdings include 1,290 shares issuable from an unvested restricted stock unit award reported in the same Form 4.

Does the SiTime (SITM) Form 4 indicate any open-market buying or selling?

No, the Form 4 only reports code G bona fide gifts of SiTime common stock. There are no open-market purchases or sales disclosed, so the filing reflects estate and ownership planning rather than trading activity for cash.

What does it mean that Christine Heckart remains beneficial owner of gifted SiTime (SITM) shares?

Beneficial ownership means she effectively controls or benefits from the shares, even if titled to a trust. For the 9,305 trust-held shares, she has voting and investment power, and her family are sole beneficiaries, so she is still treated as beneficial owner.

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

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Accepted by SEC EDGAR 05/18/2026 - 08:28 PM EDT 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)
05/14/2026

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	05/14/2026		G		9,305(1)	D	$0	1,690(2)	D
Common Stock	05/14/2026		G		9,305	A	$0	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. On May 14, 2026, the Reporting Person made a bona fide gift for estate planning purposes of 9,305 shares of the Issuer's common stock to H D & Christine Heckart 2014 Fam Trust UAD 2/14/2014, of which the Reporting Person is one of the managers. The Reporting Person and members of her immediate family are the sole beneficiaries of the trust. The Reporting Person remains the beneficial owner of the shares.

2. Includes an aggregate of 1,290 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	05/18/2026
	** 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)