# EDGAR Filing Document

**Accession Number:** 0002090032
**File Stem:** 0001193125-25-240375
**Filing Date:** 2025-10
**Character Count:** 5489
**Document Hash:** 165b3d88820818912b4f1bda03cd9578
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-240375.hdr.sgml**: 20251015

**ACCESSION NUMBER**: 0001193125-25-240375

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251014

**FILED AS OF DATE**: 20251015

**DATE AS OF CHANGE**: 20251015

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** SPT Holding Sarl
- **CENTRAL INDEX KEY:** 0002090032

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** N4
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40978
- **FILM NUMBER:** 251395437

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 21, RUE EDMOND REUTER
- **CITY:** CONTERN
- **PROVINCE COUNTRY:** N4
- **ZIP:** 5326
- **BUSINESS PHONE:** (732) 589-8142

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 21, RUE EDMOND REUTER
- **CITY:** CONTERN
- **PROVINCE COUNTRY:** N4
- **ZIP:** 5326
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Fluence Energy, Inc.
- **CENTRAL INDEX KEY:** 0001868941
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 871304612
- **FISCAL YEAR END:** 0930

**BUSINESS ADDRESS:**
- **STREET 1:** 4601 FAIRFAX DRIVE
- **STREET 2:** SUITE 600
- **CITY:** ARLINGTON
- **STATE:** VA
- **ZIP:** 22203
- **BUSINESS PHONE:** (833) 358-3623

**MAIL ADDRESS:**
- **STREET 1:** 4601 FAIRFAX DRIVE
- **STREET 2:** SUITE 600
- **CITY:** ARLINGTON
- **STATE:** VA
- **ZIP:** 22203

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>SPT Holding Sarl<br><sub>(Last) (First) (Middle)</sub><br>21 RUE EDMOND REUTER<br><sub>(Street)</sub><br>CONTERN, N4 5326<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Fluence Energy, Inc. [ FLNC ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-10-14 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Class A Common Stock | 20000000<sup>(1)</sup> | D<sup>(2)</sup> |  |
| Class A Common Stock | 11761131 | I | See footnotes<sup>(3)(4)</sup> |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

### Footnotes:

(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.

**Signature:** SPT Holding, SARL, By: /s/ Thomas Grunewald, Name: Thomas Grunewald, Title:  CEO  
**Date:** 2025-10-15

**Signature:** By: /s/ Denis Stoffel, Name: Denis Stoffel, Title: CFO  
**Date:** 2025-10-15

### Remarks:

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.**