BlackRock (NYSE: BLK) reports 11.9% ownership in Advanced Energy (AEIS)

Rhea-AI Filing Summary

BlackRock, Inc. filed an Amendment No. 4 to a Schedule 13G/A reporting beneficial ownership of Advanced Energy Industries, Inc. common stock. The filing states 4,511,686 shares beneficially owned, representing 11.9% of the class as of 03/31/2026. It reports 4,414,006 shares as sole voting power and 4,511,686 as sole dispositive power. The filing is signed by Spencer Fleming on 04/29/2026.

Insights

Institutional Ownership Analyst

BlackRock reports a sizeable 11.9% stake in Advanced Energy Industries as of 03/31/2026.

BlackRock's disclosure shows it beneficially owns 4,511,686 shares with 4,414,006 shares carrying sole voting power. Such Schedule 13G/A amendments routinely update institutional ownership figures and control-related voting/dispositive details.

Impact depends on fund-level decisions; the filing documents current ownership and voting authority but does not state any proposed transactions or changes to holdings.

Key Figures

Beneficial ownership: 4,511,686 shares Percent of class: 11.9% Sole voting power: 4,414,006 shares +3 more

6 metrics

Beneficial ownership 4,511,686 shares Amount beneficially owned as of 03/31/2026

Percent of class 11.9% Percent of common stock as of 03/31/2026

Sole voting power 4,414,006 shares Number with sole power to vote reported in Item 4(c)(i)

Sole dispositive power 4,511,686 shares Number with sole power to dispose reported in Item 4(c)(iii)

Report date 03/31/2026 Reporting date for ownership figures

Signature date 04/29/2026 Date schedule was signed by Spencer Fleming

Key Terms

Schedule 13G/A, Beneficial ownership, Sole dispositive power

3 terms

Schedule 13G/A regulatory

"Amendment No. 4 to Schedule 13G/A reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficial ownership financial

"Amount beneficially owned: 4511686 (b) Percent of class: 11.9 %"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Sole dispositive power financial

"Sole power to dispose or to direct the disposition of: 4511686"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

ADVANCED ENERGY INDUSTRIES INC

(Name of Issuer)

Common Stock

(Title of Class of Securities)

007973100

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 007973100

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 4,414,006.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 4,511,686.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,511,686.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.9 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ADVANCED ENERGY INDUSTRIES INC
(b)	Address of issuer's principal executive offices: 1595 WYNKOOP STREET SUITE 800 DENVER CO 80202
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 007973100
Item 4.	Ownership
(a)	Amount beneficially owned: 4511686
(b)	Percent of class: 11.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 4414006
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 4511686
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of ADVANCED ENERGY INDUSTRIES INC. No one person's interest in the common stock of ADVANCED ENERGY INDUSTRIES INC is more than five percent of the total outstanding common shares.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/29/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7

FAQ

What stake does BlackRock report in AEIS?

BlackRock reports beneficial ownership of 4,511,686 shares, equal to 11.9% of Advanced Energy Industries common stock as of 03/31/2026. The filing lists voting and dispositive powers attributed to BlackRock's reporting business units.

Who has the voting power for BlackRock's AEIS shares?

The filing states BlackRock has 4,414,006 shares of sole voting power. It reports no shared voting power, documenting which shares BlackRock can vote directly through its reporting business units.

When was the Schedule 13G/A amendment signed?

The Amendment No. 4 schedule was signed by Spencer Fleming on 04/29/2026. The beneficial ownership figures are reported as of 03/31/2026 in the filing's cover data.

Does the filing show BlackRock will sell or buy AEIS shares?

No—this Schedule 13G/A amendment reports ownership only. It documents BlackRock's beneficial ownership and voting/dispositive powers and does not disclose any purchase or sale instructions or planned transactions.

What does 'sole dispositive power' mean in this filing?

It indicates the filer, here BlackRock's reporting business units, has the exclusive authority to direct disposition of 4,511,686 shares. The filing lists that figure as the number of shares subject to sole dispositive control.