What does the 16,871-share tax-withholding disposition mean for SITM stock?

The 16,871-share tax-withholding disposition in SiTime (SITM) stock represents shares delivered to satisfy exercise price or tax liabilities. This is an administrative event tied to equity compensation, not an open-market sale, and reflects routine handling of executive stock-based awards.

SiTime (SITM) CEO logs tax-withholding share transfer and large unvested RSU stake

Filing Impact

(Very High)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

SITIME Corp Chief Executive Officer Rajesh Vashist reported compensation-related share movements involving company common stock. On May 20, 2026, 16,871 shares of common stock were disposed of at $697.00 per share as a tax-withholding disposition, meaning shares were delivered to cover exercise price or tax liabilities rather than sold in the open market.

After this transaction, Vashist held 432,898 shares of common stock directly. Indirectly, entities associated with him, including Aldebran Constellation LLC and two Aldebran family dynasty trusts, held a total of 25,809 shares after the reported transactions on May 21 and May 20, 2026. Footnotes also state that 291,529 shares of common stock are issuable from previously reported unvested restricted stock units and performance-based restricted stock units.

Insider Trade Summary

0 shares gifted

Mixed 4 txns

Insider VASHIST RAJESH

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Gift	Common Stock	0	$0.00	--
Gift	Common Stock	0	$0.00	--
Tax Withholding	Common Stock	16,871	$697.00	$11.76M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 25,809 shares (Indirect, See Footnote); Common Stock — 432,898 shares (Direct, null)

Footnotes (1)

Includes an aggregate of 291,529 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 85,426 restricted stock units that vest over time, and 206,103 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. 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. 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. 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.

Key Figures

Tax-withholding shares: 16,871 shares Tax-withholding price: $697.00 per share Direct holdings after transaction: 432,898 shares +4 more

7 metrics

Tax-withholding shares 16,871 shares Common stock disposed of for tax obligations on May 20, 2026

Tax-withholding price $697.00 per share Price for tax-withholding disposition of common stock

Direct holdings after transaction 432,898 shares Common stock directly owned by CEO after May 20, 2026

Indirect holdings after transactions 25,809 shares Common stock held by Aldebran entities after May 21 and May 20, 2026

Unvested equity awards 291,529 shares Common shares issuable from unvested RSUs and performance-based RSUs

Time-vesting RSUs 85,426 units Restricted stock units vesting over time

Performance-based RSUs 206,103 units Units vesting based on absolute and relative stock price performance

Key Terms

tax-withholding disposition, bona fide gift, restricted stock units, performance-based restricted stock units, +2 more

6 terms

tax-withholding disposition financial

"Payment of exercise price or tax liability by delivering securities"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

bona fide gift financial

"transaction_code_description": "Bona fide gift"

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 units financial

"shares of common stock issuable pursuant to previously reported restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

performance-based restricted stock units financial

"206,103 performance-based restricted stock units that vest based on certain absolute and relative price performance"

Performance-based restricted stock units are a type of employee equity award that converts into company shares only if predefined financial or operational targets are met over a set period. Think of it like a bonus check that becomes stock only when specific goals are hit; it ties pay to results, aligning managers’ incentives with shareholders. Investors care because these awards affect future share count, executive incentives, and signal how management’s success will be measured and rewarded.

Dynasty Trust financial

"Aldebran Rajesh Family Dynasty Trust DTD 09/23/2021"

voting and investment power financial

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

Form 4 Insider Transactions: What Each Field Means →

05/22/2026 - 08:15 AM

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

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
X	Officer (give title below)	Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/20/2026		F		16,871	D	$697	432,898⁽¹⁾	D
Common Stock								24,781	I	See Footnote⁽²⁾
Common Stock	05/21/2026		G		0	A	$0	25,809	I	See Footnote⁽³⁾
Common Stock	05/21/2026		G		0	A	$0	25,809	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Includes an aggregate of 291,529 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 85,426 restricted stock units that vest over time, and 206,103 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 Constellation LLC, 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 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.

4. 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.

Remarks:

	Samsheer Ahamad, Attorney-in-fact	05/22/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did SITM CEO Rajesh Vashist report in this Form 4?

Rajesh Vashist reported a tax-withholding disposition of 16,871 SiTime (SITM) common shares at $697.00 each. The filing also shows indirect holdings through Aldebran-related entities and references a large pool of unvested restricted and performance-based stock units.

How many SITM shares does the CEO hold after the reported Form 4 transactions?

After the reported transactions, SiTime (SITM) CEO Rajesh Vashist holds 432,898 common shares directly. Indirectly, Aldebran Constellation LLC and two Aldebran family dynasty trusts collectively hold 25,809 shares, over which he has voting and investment power as a manager.

What indirect SITM holdings are reported for entities associated with the CEO?

Entities associated with SiTime (SITM) CEO Rajesh Vashist—Aldebran Constellation LLC and two Aldebran family dynasty trusts—own 25,809 common shares in total. Vashist is a manager of these entities and has voting and investment power over their reported SiTime share positions.

How many unvested equity awards tied to SITM stock does the CEO have?

Footnotes state that 291,529 SiTime (SITM) common shares are issuable from previously reported unvested awards. These include 85,426 time-vesting restricted stock units and 206,103 performance-based restricted stock units that vest based on specified stock price performance conditions over various periods.