Advanced Energy director sells 265 shares at $288.14

A director of ADVANCED ENERGY INDUSTRIES INC reported an indirect 10b5-1 sale of 265 AEIS shares through a family trust, leaving 7,952 shares held by the trust.

Rhea-AI Filing Summary

ADVANCED ENERGY INDUSTRIES INC (AEIS) director Anne DelSanto reported an indirect sale of 265 shares of common stock on September 8, 2026 at an average price of $288.14 per share. The shares were sold from The Delsanto Family Trust, where she serves as trustee, and the trust held 7,952 shares after the sale. The sale was made under a Rule 10b5-1 trading plan adopted on March 10, 2026.

Insider Trade Summary 10b5-1

Net Seller: 265 shares

Net Sell 1 txn

Insider DelSanto Anne

Role Director

Sold 265 shs ($76K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	265	$288.14	$76K

Holdings After Transaction: Common Stock — 7,952 shares (Indirect, By The Delsanto Family Trust)

Footnotes (2)

1. F1. The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2026.
2. F2. Shares held by The Delsanto Family Trust, for which the reporting person serves as a trustee.

Key Figures

Shares sold: 265 shares Sale price per share: $288.14 per share Shares held after transaction: 7,952 shares +2 more

5 metrics

Shares sold 265 shares Indirect sale of AEIS common stock on September 8, 2026

Sale price per share $288.14 per share Average price received in the September 8, 2026 sale

Shares held after transaction 7,952 shares AEIS shares held by The Delsanto Family Trust after the sale

Form 4 transaction date September 8, 2026 Date of the reported sale of AEIS common stock

10b5-1 plan adoption date March 10, 2026 Date the Rule 10b5-1 trading plan governing the sale was adopted

Key Terms

Rule 10b5-1 trading plan, trading plan, trustee

3 terms

Rule 10b5-1 trading plan regulatory

"The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 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.

trading plan regulatory

"The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2026."

A trading plan is a written set of rules an investor follows about what to buy or sell, when to enter and exit positions, and how much risk to accept—like a travel itinerary that maps the route, stops, and budget before a trip. It matters because it helps remove emotional decisions during market swings, enforces discipline, and makes performance easier to review and improve, reducing the chance of costly impulsive moves.

trustee other

"Shares held by The Delsanto Family Trust, for which the reporting person serves as a trustee."

A trustee is a person or institution legally appointed to hold and manage assets or enforce an agreement on behalf of other people (beneficiaries). Think of a trustee as a neutral referee or custodian who must act in the beneficiaries’ best interests, follow the trust or contract rules, and handle distributions, recordkeeping and enforcement. Investors care because a trustworthy trustee protects their rights, ensures promised payments or remedies are delivered, and can influence recoveries if things go wrong.

FAQ

What insider transaction did AEIS director Anne DelSanto report?

She reported an indirect sale of 265 shares of ADVANCED ENERGY INDUSTRIES INC common stock on September 8, 2026 at an average price of $288.14 per share.

How many AEIS shares does the Delsanto Family Trust hold after this Form 4 transaction?

After the reported transaction, The Delsanto Family Trust held 7,952 shares of ADVANCED ENERGY INDUSTRIES INC common stock.

Was the September 8, 2026 AEIS share sale made under a Rule 10b5-1 plan?

Yes. The filing states the sale was made pursuant to a Rule 10b5-1 trading plan adopted by Anne DelSanto on March 10, 2026.

Is the AEIS Form 4 sale a direct or indirect holding for Anne DelSanto?

The sale involved indirect ownership. The reported shares are held by The Delsanto Family Trust, for which she serves as trustee.

What was the dollar price per share in the AEIS insider sale?

The reported sale price was an average of $288.14 per share of ADVANCED ENERGY INDUSTRIES INC common stock.

How many AEIS shares in total were sold in this Form 4 filing?

The Form 4 reports a single transaction involving the sale of 265 shares of ADVANCED ENERGY INDUSTRIES INC common stock.

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Available on EDGAR 09/10/2026 - 03:39 PM Accepted by SEC EDGAR 09/10/2026 - 03:38 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^*

DelSanto Anne

(Last) (First) (Middle)

1595 WYNKOOP, SUITE 800

(Street)

DENVER COLORADO 80202

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ADVANCED ENERGY INDUSTRIES INC [ AEIS ]

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)
09/08/2026

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	09/08/2026		S(1)		265	D	$288.14	7,952	I	By The Delsanto Family Trust(2)

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 reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2026.

2. Shares held by The Delsanto Family Trust, for which the reporting person serves as a trustee.

	/s/ Elizabeth Vonne - Attorney-in-Fact	09/10/2026
	** 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)