CTS (CTS) CEO O'Sullivan surrenders 3,680 shares to cover restricted stock taxes

Rhea-AI Filing Summary

CTS Corporation President & CEO Kieran M. O'Sullivan reported a routine tax-related share withholding. On February 6, 2026, he surrendered 3,680 shares of common stock at $55.78 per share to cover tax obligations tied to vesting restricted stock.

After this transaction, O'Sullivan directly beneficially owned 410,730 shares of CTS common stock. The filing describes a non-open-market transaction classified as code F, which typically reflects shares withheld by the company rather than discretionary selling in the market.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider O'SULLIVAN KIERAN M

Role President & CEO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	3,680	$55.78	$205K

Holdings After Transaction: Common Stock — 410,730 shares (Direct)

Footnotes (1)

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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^*

O'SULLIVAN KIERAN M

(Last) (First) (Middle)

4925 INDIANA AVE

(Street)

LISLE IL 60532

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CTS CORP [ CTS ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/06/2026

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	02/06/2026		F		3,680(1)	D	$55.78	410,730	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. Reflects shares of the Issuer's common stock surrendered by the Reporting Person to satisfy tax withholding obligations upon the vesting of shares granted under a restricted stock agreement.

	Debra S.Rouse, attorney-in-fact for Kieran M. O'Sullivan	02/09/2026
	** 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.

FAQ

What insider transaction did CTS (CTS) report for its CEO on February 6, 2026?

CTS reported that President & CEO Kieran M. O'Sullivan surrendered 3,680 CTS common shares on February 6, 2026. The transaction was coded F, indicating shares withheld to satisfy tax obligations from vesting restricted stock rather than an open-market sale.

How many CTS (CTS) shares does CEO Kieran M. O'Sullivan own after this Form 4?

After the reported transaction, Kieran M. O'Sullivan beneficially owned 410,730 shares of CTS common stock directly. This reflects his holdings following the 3,680-share surrender for tax withholding related to the vesting of a restricted stock award.

Was the CTS (CTS) CEO’s Form 4 transaction an open-market sale?

No, the CTS CEO’s transaction was not an open-market sale. It was coded F, meaning 3,680 shares were surrendered to cover tax withholding when restricted stock vested, a common administrative event rather than a discretionary stock sale.

At what price were the CTS (CTS) shares surrendered in the CEO’s tax withholding transaction?

The 3,680 CTS common shares surrendered by CEO Kieran M. O'Sullivan for tax withholding were valued at $55.78 per share. This price is used to calculate the value of shares withheld to satisfy associated tax obligations on the vesting restricted stock.

What triggered the CTS (CTS) CEO’s share surrender reported on this Form 4?

The share surrender was triggered by the vesting of restricted stock previously granted to CTS CEO Kieran M. O'Sullivan. To satisfy tax withholding obligations from this vesting, 3,680 shares of CTS common stock were surrendered back to the issuer.

How is the CTS (CTS) CEO’s ownership characterized in this Form 4 filing?

In this Form 4, Kieran M. O'Sullivan’s 410,730 CTS common shares are reported as directly owned. The filing lists his roles as Director and President & CEO, and does not indicate any indirect ownership through entities or disclaimers of beneficial ownership.