Wintrust COO Dykstra sells 13,515 company shares

Wintrust Financial Corp executive David A. Dykstra, Vice Chairman and COO, reported a sale of 13,515 shares of common stock on 2026-08-13.

Rhea-AI Filing Summary

Wintrust Financial Corp executive David A. Dykstra, Vice Chairman and COO, reported a sale of 13,515 shares of common stock on 2026-08-13. The shares were sold at a weighted average price of $162.77 per share, in multiple trades ranging from $162.50 to $162.94. Following this transaction, Dykstra directly holds 166,449 shares of Wintrust Financial common stock. The transaction was reported as an open-market or private sale and was not marked as executed under a Rule 10b5-1 trading plan.

Insider Trade Summary

Net Seller: 13,515 shares

Net Sell 1 txn

Insider DYKSTRA DAVID A

Role VICE CHAIRMAN AND COO

Sold 13,515 shs ($2.20M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	13,515	$162.77	$2.20M

Holdings After Transaction: Common Stock — 166,449 shares (Direct)

Footnotes (1)

1. F1. The price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $162.50 to $162.94, inclusive. The reporting person undertakes to provide to the SEC, the issuer and any security holder full information regarding the number of shares and the prices at which the shares were purchased.

Key Figures

Shares sold: 13,515 shares Weighted average sale price: $162.77 per share Sale price range: $162.50–$162.94 per share +1 more

4 metrics

Shares sold 13,515 shares Common Stock sold by David A. Dykstra on 2026-08-13

Weighted average sale price $162.77 per share Average price for the 13,515 shares sold

Sale price range $162.50–$162.94 per share Range of prices for multiple transactions in the sale

Shares held after transaction 166,449 shares Direct ownership by David A. Dykstra after the sale

Key Terms

weighted average price, open market or private transaction, Common Stock

3 terms

weighted average price financial

"The price reported is the 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

"transaction_code_description: Sale in open market or private transaction"

Common Stock financial

"security_title: 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.

FAQ

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

What insider transaction did WTFC report for David A. Dykstra?

Wintrust Financial Corp (WTFC) reported that David A. Dykstra, its Vice Chairman and COO, sold 13,515 shares of common stock on 2026-08-13 at a weighted average price of $162.77 per share in open-market or private transactions.

At what prices did David A. Dykstra sell WTFC shares?

David A. Dykstra sold WTFC common stock at a weighted average price of $162.77 per share, with individual trade prices ranging from $162.50 to $162.94, as disclosed in the transaction footnote describing the sale pricing details.

How many WTFC shares does David A. Dykstra hold after the reported sale?

After the sale, David A. Dykstra directly holds 166,449 shares of Wintrust Financial Corp common stock. This post-transaction balance reflects his remaining direct ownership as reported in the Form 4 insider trading disclosure for 2026-08-13.

Was the WTFC insider sale by David A. Dykstra under a Rule 10b5-1 plan?

The filing indicates the Rule 10b5-1 checkbox was not selected, so the reported sale by David A. Dykstra on 2026-08-13 was not affirmed as being executed under a Rule 10b5-1 trading plan arrangement.

What type of security did David A. Dykstra sell in WTFC?

David A. Dykstra sold Common Stock of Wintrust Financial Corp (WTFC). The Form 4 shows this as a non-derivative security transaction, with the shares sold in open-market or private sale transactions during 2026-08-13.

How many WTFC shares did David A. Dykstra sell in total on 2026-08-13?

On 2026-08-13, David A. Dykstra sold a total of 13,515 shares of Wintrust Financial Corp common stock. The transaction is coded as a sale in open market or private transaction with pricing disclosed on a weighted-average basis.

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

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Available on EDGAR 08/13/2026 - 04:25 PM Accepted by SEC EDGAR 08/13/2026 - 04:24 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).

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^*

DYKSTRA DAVID A

(Last) (First) (Middle)

9700 WEST HIGGINS ROAD, 8TH FLOOR

(Street)

ROSEMONT ILLINOIS 60018

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
WINTRUST FINANCIAL CORP [ WTFC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VICE CHAIRMAN AND COO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/13/2026

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	08/13/2026		S		13,515	D	$162.77(1)	166,449	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 price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $162.50 to $162.94, inclusive. The reporting person undertakes to provide to the SEC, the issuer and any security holder full information regarding the number of shares and the prices at which the shares were purchased.

Remarks:

	/s/Kathleen M. Boege, Attorney-in-fact	08/13/2026
	** 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)