Was the Webster Financial (WBS) CEO’s share sale made under a Rule 10b5-1 plan?

Yes. The filing states the 8,000-share sale occurred under a Rule 10b5-1 trading plan adopted by John R. Ciulla on April 30, 2025. Such plans pre-schedule trades to provide an affirmative defense against insider trading claims.

Webster Financial (NYSE: WBS) CEO sells 8,000 shares under 10b5-1 plan

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Webster Financial Corp Chairman and CEO John R. Ciulla reported an open-market sale of 8,000 shares of common stock. The sale occurred on May 18, 2026 at an average price of $71.672 per share pursuant to a Rule 10b5-1 trading plan adopted on April 30, 2025.

Following the transaction, he directly holds 289,838 common shares. A separate entry reflects 17,187.1600 common shares held indirectly through a 401(k) plan after the same date.

Insider Trade Summary 10b5-1

Net Seller: 8,000 shares ($573,376)

Net Sell 2 txns

Insider CIULLA JOHN R

Role Chairman and CEO

Sold 8,000 shs ($573K)

Type	Security	Shares	Price	Value
Sale	Common Stock	8,000	$71.672	$573K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 289,838 shares (Direct, null); Common Stock — 17,187.16 shares (Indirect, 401(k)Plan)

Footnotes (1)

The reported sale of 8,000 shares occurred pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 30, 2025. The price reported in Column 4 is an average price. The reporting person undertakes to provide Webster Financial Corporation, any security holder of Webster Financial Corporation, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares of common stock sold at each price.

Key Figures

Shares sold: 8,000 shares Average sale price: $71.672 per share Direct holdings after sale: 289,838 shares +2 more

5 metrics

Shares sold 8,000 shares Open-market sale on May 18, 2026

Average sale price $71.672 per share Weighted average price for 8,000-share sale

Direct holdings after sale 289,838 shares Common stock directly owned after May 18, 2026 sale

Indirect 401(k) holdings 17,187.1600 shares Common stock held through 401(k) plan as of May 18, 2026

Net shares sold 8,000 shares Net sell direction in transaction summary

Key Terms

Rule 10b5-1 trading plan, open-market sale, 401(k)Plan, Form 4

4 terms

Rule 10b5-1 trading plan regulatory

"The reported sale of 8,000 shares occurred pursuant to a Rule 10b5-1 trading plan"

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 code S is described as a sale in open market or private transaction"

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.

401(k)Plan financial

"An indirect ownership entry lists 17,187.1600 shares held through a 401(k)Plan"

Form 4 regulatory

"Insider activity is reported for John R. Ciulla on SEC Form 4"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

05/20/2026 - 04:10 PM

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^*

CIULLA JOHN R

(Last)

(First)

(Middle)

C/O WEBSTER FINANCIAL CORP

200 ELM STREET

(Street)

STAMFORD

CONNECTICUT

06902

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
WEBSTER FINANCIAL CORP [ WBS ]

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

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chairman and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/18/2026		S⁽¹⁾		8,000	D	$71.672⁽²⁾	289,838	D
Common Stock								17,187.16	I	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The reported sale of 8,000 shares occurred pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 30, 2025.

2. The price reported in Column 4 is an average price. The reporting person undertakes to provide Webster Financial Corporation, any security holder of Webster Financial Corporation, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares of common stock sold at each price.

Remarks:

	Bradley Larkin, attorney-in-fact	05/20/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Webster Financial (WBS) report for John R. Ciulla?

Webster Financial reported that Chairman and CEO John R. Ciulla sold 8,000 shares of common stock. The open-market sale occurred on May 18, 2026 under a pre-arranged Rule 10b5-1 trading plan, as disclosed in the Form 4 footnotes.

At what price did John R. Ciulla sell Webster Financial (WBS) shares?

John R. Ciulla sold 8,000 Webster Financial common shares at an average price of $71.672 per share. The filing notes this is a weighted average price and offers to provide full pricing details for each trade upon request.

How many Webster Financial (WBS) shares does John R. Ciulla hold after this Form 4 sale?

After the reported sale, John R. Ciulla directly holds 289,838 Webster Financial common shares. The Form 4 also shows 17,187.1600 common shares held indirectly through a 401(k) plan as of the same transaction date.

Does the Form 4 for Webster Financial (WBS) include any derivative transactions?

No derivative securities are listed in this Form 4. The derivative transaction summary shows zero exercises and no remaining derivative positions reported, indicating this filing covers only common stock holdings and an 8,000-share open-market sale.

What indirect holdings of Webster Financial (WBS) stock does John R. Ciulla report?

John R. Ciulla reports indirect ownership of 17,187.1600 Webster Financial common shares through a 401(k) plan. This position is classified as indirect ownership in the Form 4, separate from his directly held 289,838 common shares.