[Form 4] ADVANCED ENERGY INDUSTRIES INC Insider Trading Activity

Rhea-AI Filing Summary

Advanced Energy Industries director Anne DelSanto exercised 2,313 restricted stock units into the same number of common shares on May 2, 2026, at no cash exercise price. These RSUs were originally granted on May 2, 2025 and vest one year later on a one-for-one basis.

After this conversion, DelSanto is shown with 8,487 common shares in total. Of these, 2,313 shares were newly issued and are currently held directly with standing instructions to transfer them to The DelSanto Family Trust, while 6,174 shares are already held indirectly through that trust, where she serves as trustee.

Insights

Equity compensation analyst

Director converts 2,313 RSUs into common shares, a routine vesting event.

The filing shows Anne DelSanto converting 2,313 restricted stock units into common stock of Advanced Energy Industries. The RSUs were granted on May 2, 2025 and vested on their one-year anniversary, with a one-for-one share conversion.

No shares were sold; this is an exercise-and-hold style transaction. Following the conversion, DelSanto’s position is 8,487 common shares, split between direct holdings and 6,174 shares held via The DelSanto Family Trust, where she is trustee.

Insider Trade Summary

2,313 shares exercised/converted

Mixed 2 txns

Insider DelSanto Anne

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	2,313	$0.00	--
Exercise	Common Stock	2,313	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 8,487 shares (Indirect, By The Delsanto Family Trust)

Footnotes (1)

1. On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units covert to common stock on a one-for-one basis. Of this total amount of 8,487 shares: (A) 2,313 shares were issued and are held directly by the reporting person, and the reporting person has instructions in place to transfer the 2,313 shares to The Delsanto Family Trust; and (B) 6,174 shares are held indirectly by The Delsanto Family Trust, for which the reporting person serves as a trustee. Restricted stock units are not exercisable and do not have an expiration date.

Key Figures

RSUs converted: 2,313 units Total shares after transaction: 8,487 shares Shares held via family trust: 6,174 shares +1 more

4 metrics

RSUs converted 2,313 units Restricted stock units converted to common stock on May 2, 2026

Total shares after transaction 8,487 shares Common stock position reported following RSU conversion

Shares held via family trust 6,174 shares Indirectly held by The DelSanto Family Trust with Anne DelSanto as trustee

Direct shares from RSU vest 2,313 shares Newly issued common shares from May 2, 2025 RSU grant

Key Terms

Restricted Stock Units, derivative security, indirect ownership, trustee

4 terms

Restricted Stock Units financial

"the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

indirect ownership financial

"6,174 shares are held indirectly by The Delsanto Family Trust, for which the reporting person serves as a trustee"

trustee financial

"6,174 shares are held indirectly 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.

Form 4 Insider Transactions: What Each Field Means →

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^*

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)
05/02/2025

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	05/02/2026		M		2,313	A	(1)	8,487(2)	I	By The Delsanto Family Trust

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
Restricted Stock Units	(1)	05/02/2026		M			2,313	(3)	(3)	Common Stock	2,313	$0	0	D

Explanation of Responses:

1. On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units covert to common stock on a one-for-one basis.

2. Of this total amount of 8,487 shares: (A) 2,313 shares were issued and are held directly by the reporting person, and the reporting person has instructions in place to transfer the 2,313 shares to The Delsanto Family Trust; and (B) 6,174 shares are held indirectly by The Delsanto Family Trust, for which the reporting person serves as a trustee.

3. Restricted stock units are not exercisable and do not have an expiration date.

	/s/ Elizabeth Vonne - Attorney-in-Fact	05/05/2026
	** 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)