[Form 4] BELDEN INC. Insider Trading Activity

Rhea-AI Filing Summary

Belden Inc. EVP - Chief Comm. Officer Brian Lieser sold 2,719 shares of common stock in an open-market transaction. The sale occurred on April 14, 2026 at an average price of $130.69 per share.

After the sale, he directly held 32,959 Belden shares and had an additional 635.9635 shares held indirectly through the Belden Retirement Savings Plan. The filing notes the sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 11, 2025.

Insider Trade Summary 10b5-1

Net Seller: 2,719 shares ($355,346)

Net Sell 2 txns

Insider Lieser Brian

Role EVP - Chief Comm. Officer

Sold 2,719 shs ($355K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,719	$130.69	$355K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 32,959 shares (Direct); Common Stock — 635.964 shares (Indirect, By 401(k) Plan)

Footnotes (1)

1. The sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lieser on August 11, 2025. Represents the balance of shares of Belden Inc. common stock held in the Belden Retirement Savings Plan as of the date of this filing.

Key Figures

Shares sold: 2,719 shares Sale price per share: $130.69 per share Direct holdings after sale: 32,959 shares +3 more

6 metrics

Shares sold 2,719 shares Open-market sale of Belden common stock on April 14, 2026

Sale price per share $130.69 per share Average price for the 2,719 shares sold

Direct holdings after sale 32,959 shares Direct Belden common stock ownership following the transaction

Indirect 401(k) holdings 635.9635 shares Belden Retirement Savings Plan balance as of filing date

Transaction code S Sale in open market or private transaction

Net share change -2,719 shares Net-sell direction per transactionSummary

Key Terms

Rule 10b5-1 trading plan, open-market sale, Belden Retirement Savings Plan, indirect ownership

4 terms

Rule 10b5-1 trading plan regulatory

"The sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lieser on August 11, 2025."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: "open-market sale" for 2,719 shares of Common Stock."

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Belden Retirement Savings Plan financial

"held in the Belden Retirement Savings Plan as of the date of this filing."

indirect ownership financial

"nature_of_ownership: "By 401(k) Plan" with indirect code "I"."

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).

X

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^*

Lieser Brian

(Last) (First) (Middle)

C/O BELDEN INC.

1 N. BRENTWOOD BLVD., 15TH FLOOR

(Street)

ST. LOUIS MISSOURI 63105

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
BELDEN INC. [ BDC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP - Chief Comm. Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/14/2026

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	04/14/2026		S(1)		2,719	D	$130.69	32,959	D
Common Stock								635.9635(2)	I	By 401(k) Plan

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. The sale reported was effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Lieser on August 11, 2025.

2. Represents the balance of shares of Belden Inc. common stock held in the Belden Retirement Savings Plan as of the date of this filing.

	/s/ Brian E. Anderson, attorney-in-fact for Brian Lieser	04/14/2026
	** 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)