[3] – SPT Holding Sarl (CIK 0002090032)

Rhea-AI Filing Summary

Fluence Energy (FLNC) — Section 16 initial ownership filing. SPT Holding, SARL filed a Form 3 as a director, reporting beneficial ownership of Class A Common Stock. The filing lists 20,000,000 shares held directly and 11,761,131 shares held indirectly through SPT Invest Management Sarl. A footnote states the direct position reflects shares received in a transfer from Siemens AG under Rule 16a-13, which does not change the aggregate Class A ownership beneficially held by Siemens AG and its subsidiaries.

The event date is 10/14/2025. Footnotes detail the ownership chain: SPT Invest Management Sarl is wholly owned by SPT Holding, SARL, which is wholly owned by Siemens Pension-Trust e.V.; Siemens AG is an affiliate of Siemens Pension-Trust e.V.

Insights

Equity ownership & governance analyst

Administrative Form 3 disclosing direct and indirect FLNC holdings.

This filing is an initial statement of beneficial ownership. It records 20,000,000 Class A shares directly held by SPT Holding, SARL and 11,761,131 Class A shares indirectly via SPT Invest Management Sarl.

A footnote explains the direct position reflects a transfer from Siemens AG under Rule 16a-13, which the filer states does not alter Siemens AG’s aggregate beneficial ownership with its subsidiaries. The ownership chain includes Siemens Pension-Trust e.V. as the parent of SPT Holding.

As a disclosure of existing holdings, this is typically neutral for valuation; actual market impact depends on future disclosures and any subsequent transactions.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

SPT Holding Sarl

(Last) (First) (Middle)

21 RUE EDMOND REUTER

(Street)

CONTERN N4 5326

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/14/2025

3. Issuer Name and Ticker or Trading Symbol
Fluence Energy, Inc. [ FLNC ]

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

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class A Common Stock	20,000,000(1)	D(2)
Class A Common Stock	11,761,131	I	See footnotes(3)(4)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares received in a transfer from Siemens AG in a transaction exempt from reporting under Rule 16a-13 of the Securities Exchange Act of 1934, as amended. Such transfer does not represent any change to the aggregate number of shares of Issuer Class A Common Stock beneficially owned by Siemens AG and its subsidiaries.

2. These shares are directly owned by SPT Holding, SARL.

3. These shares are directly owned by SPT Invest Management Sarl.

4. SPT Invest Management Sarl is wholly owned by SPT Holding, SARL, which is wholly owned by Siemens Pension-Trust e.V. Siemens AG is an affiliate of Siemens Pension-Trust e.V. and may be deemed to share beneficial ownership of the shares of Class A Common Stock beneficially owned by Siemens Pension-Trust e.V.

	SPT Holding, SARL, By: /s/ Thomas Grunewald, Name: Thomas Grunewald, Title: CEO	10/15/2025
	By: /s/ Denis Stoffel, Name: Denis Stoffel, Title: CFO	10/15/2025
	** 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 5 (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.

FAQ

What did Fluence Energy (FLNC) disclose in this filing?

An initial Form 3 showing SPT Holding, SARL as a director reporting beneficial ownership of Class A shares.

How many FLNC shares are reported as directly owned?

The filing lists 20,000,000 shares of Class A Common Stock held directly by SPT Holding, SARL.

How many FLNC shares are reported as indirectly owned?

The filing lists 11,761,131 shares indirectly held through SPT Invest Management Sarl.

What is the event date for the reported ownership?

The event date is 10/14/2025.

What does the Rule 16a-13 footnote indicate?

It states shares were received via transfer from Siemens AG under Rule 16a-13 and that this does not change Siemens AG’s aggregate beneficial ownership with its subsidiaries.

Who is in the ownership chain related to the indirect holdings?

SPT Invest Management Sarl is wholly owned by SPT Holding, SARL, which is wholly owned by Siemens Pension-Trust e.V.; Siemens AG is an affiliate of Siemens Pension-Trust e.V.