SLAB (SLAB) accounting chief has 858 shares withheld for equity-award taxes

Rhea-AI Filing Summary

SILICON LABORATORIES INC. Chief Accounting Officer Mark D. Mauldin reported a routine tax-related share disposition. On May 15, 2026, 858 shares of common stock were withheld at $216.59 per share to cover taxes upon vesting of a previously reported equity award. After this withholding, Mauldin directly holds 21,090 shares of common stock. This was a tax-withholding event, not an open-market sale or purchase.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider MAULDIN MARK D

Role Chief Accounting Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock, $0.0001 par value	858	$216.59	$186K

Holdings After Transaction: Common Stock, $0.0001 par value — 21,090 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares withheld for taxes: 858 shares Withholding price per share: $216.59 per share Shares held after transaction: 21,090 shares +1 more

4 metrics

Shares withheld for taxes 858 shares Tax-withholding disposition on May 15, 2026

Withholding price per share $216.59 per share Value used for tax-withholding shares

Shares held after transaction 21,090 shares Direct common stock holdings after withholding

Tax-withholding share count 858 shares Aggregate tax-withholding across reported transactions

Key Terms

tax-withholding disposition, equity award, Form 4, Common Stock, $0.0001 par value

4 terms

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition""

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.

equity award financial

"upon the vesting of a previously reported equity award"

An equity award is a form of pay where a company gives employees, executives or other stakeholders the right to own or buy company shares—either immediately or after meeting certain conditions. Think of it like receiving slices of the company pie now or coupons to claim slices later; it matters to investors because it affects ownership dilution, executive incentives and reported compensation costs, and signals how management is being rewarded and retained.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common Stock, $0.0001 par value financial

"security_title: "Common Stock, $0.0001 par value""

Form 4 Insider Transactions: What Each Field Means →

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^*

MAULDIN MARK D

(Last) (First) (Middle)

400 WEST CESAR CHAVEZ

(Street)

AUSTIN TEXAS 78701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SILICON LABORATORIES INC. [ SLAB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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, $0.0001 par value	05/15/2026		F		858(1)	D	$216.59	21,090	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. Represents shares withheld to pay taxes upon the vesting of a previously reported equity award.

Remarks:

	Saie-Yau Hui for Mark D Mauldin	05/19/2026
	** 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)

FAQ

What insider transaction did SLAB’s Mark Mauldin report on this Form 4?

Mark D. Mauldin reported a tax-related share disposition. The company withheld 858 shares of common stock to cover taxes when a previously reported equity award vested, rather than executing an open-market sale of shares.

How many SILICON LABORATORIES (SLAB) shares were withheld for taxes?

A total of 858 common shares were withheld for taxes. The withholding occurred at a price of $216.59 per share in connection with the vesting of a previously granted equity award to the Chief Accounting Officer.

Did SLAB’s Chief Accounting Officer sell shares in the open market?

No open-market sale occurred. The 858 shares were withheld by the company to satisfy tax obligations on a vesting equity award, a standard administrative transaction distinct from discretionary buying or selling in the market.

How many SILICON LABORATORIES (SLAB) shares does Mark Mauldin hold after this transaction?

Following the tax withholding, Mark Mauldin directly holds 21,090 shares of SLAB common stock. This figure reflects his remaining direct ownership after 858 shares were retained by the company to cover equity award-related tax liabilities.

What does transaction code F mean in this SLAB Form 4 filing?

Transaction code F indicates a tax-withholding disposition. It shows that shares were delivered back to the issuer to pay the exercise price or tax liability, rather than being sold or purchased on the open market by the reporting person.