Cadence (CDNS) SVP Paul Cunningham sells 1,000 shares under Rule 10b5-1 plan

Rhea-AI Filing Summary

Cadence Design Systems Sr. Vice President Paul Cunningham completed an open-market sale of 1,000 shares of the company’s common stock at $337.49 per share on May 1, 2026. Following this transaction, he directly owns 127,586 shares of Cadence common stock.

The filing notes that this sale was carried out under a Rule 10b5-1 trading plan adopted on March 14, 2025, meaning the trade was pre-arranged rather than decided at the last minute based on market conditions.

Insider Trade Summary 10b5-1

Net Seller: 1,000 shares ($337,490)

Net Sell 1 txn

Insider Cunningham Paul

Role Sr. Vice President

Sold 1,000 shs ($337K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,000	$337.49	$337K

Holdings After Transaction: Common Stock — 127,586 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 1,000 shares Sale price per share: $337.49 per share Shares owned after sale: 127,586 shares +1 more

4 metrics

Shares sold 1,000 shares Open-market sale on May 1, 2026

Sale price per share $337.49 per share Price for Cadence common stock in reported sale

Shares owned after sale 127,586 shares Direct ownership following the Form 4 transaction

Trading plan adoption date March 14, 2025 Rule 10b5-1 trading plan used for the sale

Key Terms

Rule 10b5-1 Trading Plan, open-market sale, Common Stock

3 terms

Rule 10b5-1 Trading Plan regulatory

"The transaction was effected pursuant to a Rule 10b5-1 Trading Plan adopted on 3/14/2025"

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 is described as an open-market sale 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.

Common Stock financial

"security_title for the transaction is listed as Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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^*

Cunningham Paul

(Last) (First) (Middle)

2655 SEELY AVENUE

BUILDING 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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Sr. Vice President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

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	05/01/2026		S		1,000(1)	D	$337.49	127,586	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 3/14/2025 by the Reporting Person.

Remarks:

	/s/ Ahalya Hildreth, Attorney-in-Fact for Paul Cunningham	05/05/2026
	** 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 did Cadence Design Systems (CDNS) executive Paul Cunningham report in this Form 4?

Paul Cunningham reported an open-market sale of 1,000 shares of Cadence Design Systems common stock. The transaction occurred at $337.49 per share, and it was executed under a pre-arranged Rule 10b5-1 trading plan adopted on March 14, 2025.

How many Cadence (CDNS) shares did Paul Cunningham sell and at what price?

Paul Cunningham sold 1,000 shares of Cadence Design Systems common stock at a price of $337.49 per share. This was an open-market transaction disclosed in a Form 4 insider trading report filed with the SEC for the May 1, 2026 trade date.

How many Cadence Design Systems (CDNS) shares does Paul Cunningham hold after the sale?

After the reported sale, Paul Cunningham directly holds 127,586 shares of Cadence Design Systems common stock. This post-transaction ownership figure is included in the Form 4 and shows his remaining equity position following the 1,000-share disposition.

Was Paul Cunningham’s Cadence (CDNS) share sale made under a Rule 10b5-1 plan?

Yes. The Form 4 footnote states the transaction was effected under a Rule 10b5-1 trading plan adopted on March 14, 2025. Such plans pre-schedule trades, indicating the sale timing was planned in advance rather than being an ad hoc market decision.

What role does Paul Cunningham hold at Cadence Design Systems (CDNS)?

Paul Cunningham is identified in the Form 4 as a company officer, serving as Senior Vice President at Cadence Design Systems. His status as an executive makes his equity transactions subject to insider reporting requirements under U.S. securities regulations.