Cadence Design Systems (NASDAQ: CDNS) director sells stock under 10b5-1 plan

Rhea-AI Filing Summary

Cadence Design Systems director Ita M Brennan sold 180 shares of common stock in multiple open-market transactions. The sales occurred on March 17, 2026 at prices ranging from $293.51 to $300.56. The trades were made under a pre-arranged Rule 10b5-1 trading plan adopted on November 24, 2025.

After these transactions, Brennan directly holds 7,470 shares of Cadence Design Systems common stock. Because the sales were executed pursuant to a Rule 10b5-1 plan, they reflect a scheduled diversification step rather than an ad hoc market-timing decision.

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^*

Brennan Ita M

(Last) (First) (Middle)

2655 SEELY AVENUE, BLDG. 5

(Street)

SAN JOSE CALIFORNIA 95134

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CADENCE DESIGN SYSTEMS INC [ CDNS ]

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)
03/17/2026

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	03/17/2026		S		73(1)	D	$293.5281(2)	7,577	D
Common Stock	03/17/2026		S		55(1)	D	$295.1103(3)	7,522	D
Common Stock	03/17/2026		S		29(1)	D	$296.0739(4)	7,493	D
Common Stock	03/17/2026		S		6(1)	D	$297.0283(5)	7,487	D
Common Stock	03/17/2026		S		10(1)	D	$298.127(6)	7,477	D
Common Stock	03/17/2026		S		4(1)	D	$299.0425(7)	7,473	D
Common Stock	03/17/2026		S		3(1)	D	$300.29(8)	7,470	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. The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 Trading Plan adopted on 11/24/2025 by the Reporting Person.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $293.51 to $294.47, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $294.57 to $295.56, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $295.57 to $296.56, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $296.57 to $297.41, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

6. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $297.61 to $298.54, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

7. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $298.62 to $299.53, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

8. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $299.85 to $300.56, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

	/s/ Ahalya Hildreth, Attorney-in-Fact for Ita M. Brennan	03/18/2026
	** 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)

FAQ

What insider transaction did Cadence Design Systems (CDNS) director Ita M Brennan report?

Director Ita M Brennan reported selling 180 shares of Cadence Design Systems common stock. The shares were sold in multiple open-market trades on March 17, 2026 at prices between $293.51 and $300.56, according to the Form 4 filing.

At what prices did Ita M Brennan sell Cadence Design Systems (CDNS) shares?

The reported sales used weighted average prices, with actual trades ranging from $293.51 to $300.56 per share. Multiple open-market transactions occurred within this band, as detailed in the Form 4 footnotes describing the individual trade price ranges.

How many Cadence Design Systems (CDNS) shares does Ita M Brennan hold after the sale?

Following the reported transactions, Ita M Brennan directly holds 7,470 shares of Cadence Design Systems common stock. This post-transaction holding reflects the remaining position after the open-market sale of 180 shares disclosed in the Form 4.

Was the Cadence Design Systems (CDNS) insider sale by Ita M Brennan pre-planned?

Yes. The Form 4 states the transaction was executed under a Rule 10b5-1 trading plan adopted on November 24, 2025. Such plans allow insiders to schedule trades in advance, reducing the significance of any perceived market-timing in the sale.

What type of transaction did Ita M Brennan use to sell Cadence Design Systems (CDNS) shares?

The Form 4 classifies the activity as an open-market sale of common stock, coded "S" for sale. All seven line items involve non-derivative common shares sold directly into the market under the previously adopted Rule 10b5-1 trading plan.