Standex CEO sells 13,000 shares in preset plan trade

David A. Dunbar’s two indirect sales under a May 21, 2026 Rule 10b5-1 plan totaled 13,000 shares at about $290.81 each.

Rhea-AI Filing Summary

Standex International Corp (SXI) reported that President, CEO and Chairman David A. Dunbar disclosed two indirect sales of SXI common stock on August 31, 2026. Acting as Trustee of a Trust, he sold 4,000 shares at a weighted average price of $290.8124 and 9,000 shares at a weighted average price of $290.8175, totaling 13,000 shares. These sales were made pursuant to an existing Rule 10b5-1 trading plan dated May 21, 2026. A separate line shows a direct holding of 11,305.9759 SXI shares after the reported date.

Insider Trade Summary 10b5-1

Net Seller: 13,000 shares

Net Sell 3 txns

Insider Dunbar David A.

Role President/CEO/Chairman

Sold 13,000 shs ($3.78M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	4,000	$290.8124	$1.16M
Sale	Common Stock F1, F3	9,000	$290.8175	$2.62M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 75,973 shares (Indirect, Trustee of Trust); Common Stock — 11,305.9759 shares (Direct)

Footnotes (3)

1. F1. Sale of stock pursuant to existing 10b5-1 trading plan dated May 21, 2026.
2. F2. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $289.25 to $297.69, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.
3. F3. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $289.25 to $296.63, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

Key Figures

Shares sold (first transaction): 4,000 shares of Common Stock Weighted average sale price (first transaction): $290.8124 per share Shares sold (second transaction): 9,000 shares of Common Stock +5 more

8 metrics

Shares sold (first transaction) 4,000 shares of Common Stock Indirect sale on August 31, 2026 as Trustee of Trust

Weighted average sale price (first transaction) $290.8124 per share 4,000-share indirect sale; prices ranged from $289.25 to $297.69

Shares sold (second transaction) 9,000 shares of Common Stock Indirect sale on August 31, 2026 as Trustee of Trust

Weighted average sale price (second transaction) $290.8175 per share 9,000-share indirect sale; prices ranged from $289.25 to $296.63

Total shares sold 13,000 shares of Common Stock Sum of two indirect sales reported for August 31, 2026

Direct holdings after reported date 11,305.9759 shares of Common Stock Direct ownership position recorded as of August 31, 2026

Rule 10b5-1 plan date May 21, 2026 Date of trading plan under which the reported sales were executed

Price range (first sale block) $289.25–$297.69 per share Range of execution prices for 4,000-share indirect sale

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, Trustee of Trust, indirect ownership, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"Sale of stock pursuant to existing 10b5-1 trading plan dated May 21, 2026"

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 sale price financial

"The price reported is a weighted average sale price"

Trustee of Trust financial

"direct_or_indirect "I" with nature_of_ownership "Trustee of Trust""

indirect ownership financial

"ownership_type "indirect" and ownership_code "I""

open market or private transaction financial

"transaction_code_description "Sale in open market or private transaction""

FAQ

What insider transactions did SXI report for David A. Dunbar on August 31, 2026?

SXI reported that David A. Dunbar executed two indirect sales of common stock totaling 13,000 shares on August 31, 2026, through a trust where he is trustee, at weighted average prices around $290.81 per share.

At what prices were the SXI shares sold in David A. Dunbar’s Form 4?

The first block of 4,000 SXI shares was sold at a weighted average price of $290.8124 within a range of $289.25–$297.69. The second block of 9,000 shares was sold at a weighted average price of $290.8175 within a range of $289.25–$296.63.

Were the SXI insider sales by David A. Dunbar under a Rule 10b5-1 plan?

Yes. The filing states that the SXI stock sales were made pursuant to an existing Rule 10b5-1 trading plan dated May 21, 2026, and the Form 4 affirms trading under a Rule 10b5-1 plan.

How many SXI shares did David A. Dunbar sell in total in this Form 4?

David A. Dunbar reported selling a total of 13,000 SXI common shares indirectly through a trust, consisting of 4,000 shares in one transaction and 9,000 shares in a second transaction, both dated August 31, 2026.

What direct SXI share holdings are shown for David A. Dunbar after these transactions?

A holding entry in the Form 4 lists 11,305.9759 shares of SXI common stock held directly by David A. Dunbar as of August 31, 2026. This line reflects his direct ownership position and is separate from the indirect trust transactions.

How is the nature of ownership described for the SXI shares sold in this Form 4?

For both reported SXI sales, the ownership type is indirect, with the nature of ownership listed as “Trustee of Trust”. This means the reported transactions relate to shares held in a trust for which David A. Dunbar serves as trustee.

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Available on EDGAR 09/01/2026 - 09:04 PM Accepted by SEC EDGAR 09/01/2026 - 09:04 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^*

Dunbar David A.

(Last) (First) (Middle)

23 KEEWAYDIN DRIVE

SUITE 300

(Street)

SALEM NEW HAMPSHIRE 03079

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
STANDEX INTERNATIONAL CORP/DE/ [ SXI ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/31/2026

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	08/31/2026		S(1)		4,000	D	$290.8124(2)	84,973	I	Trustee of Trust
Common Stock	08/31/2026		S(1)		9,000	D	$290.8175(3)	75,973	I	Trustee of Trust
Common Stock								11,305.9759	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. Sale of stock pursuant to existing 10b5-1 trading plan dated May 21, 2026.

2. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $289.25 to $297.69, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

3. The price reported is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $289.25 to $296.63, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, the Corporation or any security holder of the Corporation, upon request, full information regarding the number of shares sold at each separate price.

	/s/ Kristine L. Ouimet	09/01/2026
	** 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)