Cadence director sells 180 shares at ~$285

CADENCE DESIGN SYSTEMS INC (CDNS) director Ita M. Brennan reported selling a total of 180 shares of common stock on September 10, 2026 in four open-market transactions under a pre-arranged Rule 10b5-1 Trading Plan adopted on November 24, 2025.

Rhea-AI Filing Summary

CADENCE DESIGN SYSTEMS INC (CDNS) director Ita M. Brennan reported selling a total of 180 shares of common stock on September 10, 2026 in four open-market transactions under a pre-arranged Rule 10b5-1 Trading Plan adopted on November 24, 2025.

The reported weighted-average sale prices were $284.44 for 33 shares, $285.58 for 127 shares, $286.47 for 14 shares, and $287.79 for 6 shares, with each tranche executed across multiple trades within the stated price ranges.

Insider Trade Summary 10b5-1

Net Seller: 180 shares

Net Sell 4 txns

Insider Brennan Ita M

Role Director

Sold 180 shs ($51K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	33	$284.4376	$9K
Sale	Common Stock F1, F3	127	$285.5766	$36K
Sale	Common Stock F1, F4	14	$286.4686	$4K
Sale	Common Stock F1, F5	6	$287.79	$2K

Holdings After Transaction: Common Stock — 7,824 shares (Direct)

Footnotes (5)

1. F1. 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. F2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $283.98 to $284.94, 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. F3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $285.02 to $286.01, 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. F4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $286.09 to $286.85, 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. F5. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $287.60 to $287.97, 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.

Key Figures

Total shares sold: 180 shares Shares sold tranche 1: 33 shares at $284.44 per share Shares sold tranche 2: 127 shares at $285.58 per share +3 more

6 metrics

Total shares sold 180 shares Aggregate insider sales on September 10, 2026

Shares sold tranche 1 33 shares at $284.44 per share Weighted-average sale price on September 10, 2026

Shares sold tranche 2 127 shares at $285.58 per share Weighted-average sale price on September 10, 2026

Shares sold tranche 3 14 shares at $286.47 per share Weighted-average sale price on September 10, 2026

Shares sold tranche 4 6 shares at $287.79 per share Weighted-average sale price on September 10, 2026

Rule 10b5-1 plan adoption date November 24, 2025 Date the trading plan governing these sales was adopted

Key Terms

Rule 10b5-1 Trading Plan, weighted average price, open market or private transaction

3 terms

Rule 10b5-1 Trading Plan regulatory

"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."

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.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did CDNS report for director Ita M. Brennan?

CDNS reported that director Ita M. Brennan sold a total of 180 shares of Cadence Design Systems common stock in open-market transactions on September 10, 2026.

At what prices did the CDNS insider sell shares on September 10, 2026?

The sales used weighted-average prices: $284.44 for 33 shares, $285.58 for 127 shares, $286.47 for 14 shares, and $287.79 for 6 shares, each representing multiple trades within disclosed price ranges.

How many CDNS shares did the director sell in total?

The director sold a total of 180 shares of Cadence Design Systems common stock, across four separate open-market sale tranches reported for September 10, 2026.

Were the CDNS insider sales made under a Rule 10b5-1 trading plan?

Yes. The filing states the transactions were effected pursuant to a Rule 10b5-1 Trading Plan adopted on November 24, 2025 by the reporting person.

What price ranges applied to the CDNS insider’s weighted-average sale prices?

The weighted-average sale prices reflect trades in ranges of $283.98–$284.94, $285.02–$286.01, $286.09–$286.85, and $287.60–$287.97, with the insider offering to provide detailed breakdowns upon request.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/14/2026 - 06:42 PM Accepted by SEC EDGAR 09/14/2026 - 06:41 PM Learn about SEC filing dates

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)
09/10/2026

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	09/10/2026		S		33(1)	D	$284.4376(2)	7,971	D
Common Stock	09/10/2026		S		127(1)	D	$285.5766(3)	7,844	D
Common Stock	09/10/2026		S		14(1)	D	$286.4686(4)	7,830	D
Common Stock	09/10/2026		S		6(1)	D	$287.79(5)	7,824	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 $283.98 to $284.94, 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 $285.02 to $286.01, 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 $286.09 to $286.85, 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 $287.60 to $287.97, 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	09/14/2026
	** 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)