Peter Bennett Williams - 18 Dec 2025 Form 4 Insider Report for Fluence Energy, Inc. (FLNC)

Reporting relationship: SVP and CPSCO
Issuer ticker: FLNC
Reported as of: 18 Dec 2025
Net transaction value: -$51,036
SEC form: 4
Accepted by SEC: 22 Dec 2025, 16:15:26 UTC
Prior SEC filing: 10 Dec 2025
Next SEC filing: 20 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Vincent W. Mathis as Attorney-in-fact for Peter Bennett Williams

Key filing fact

Peter Bennett Williams filed Form 4 for Fluence Energy, Inc. (FLNC) on 22 Dec 2025.

Key facts

This page summarizes Peter Bennett Williams's Form 4 filing for Fluence Energy, Inc. (FLNC).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 22 Dec 2025, 16:15.

Change

Previous filing in this sequence was filed on 10 Dec 2025.
Current net transaction value: -$51,036.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001781553 Primary reporting owner

Williams Peter Bennett

Relationship: SVP and CPSCO
Address: C/O FLUENCE ENERGY, INC., 4601 FAIRFAX DRIVE, SUITE 600, ARLINGTON
Signature: /s/ Vincent W. Mathis as Attorney-in-fact for Peter Bennett Williams
Signature date: 22 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

FLNC transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +5,825
Change %: +40%
Price
Shares after: 20,252
Date: 18 Dec 2025
Ownership: Direct
Footnotes: F1

FLNC transaction

Class A Common Stock

Tax liability

Transaction value: $51,036
Shares: -2,643
Change %: -13%
Price: $19.31
Shares after: 17,609
Date: 18 Dec 2025
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

FLNC transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value: $0
Shares: -5,825
Change %: -33%
Price: $0.000000
Shares after: 11,649
Date: 18 Dec 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 5,825
Exercise price
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Class A Common Stock of the Issuer.

Footnote F2

Represents the number of shares of Class A Common Stock that have been withheld to satisfy tax withholding obligations in connection with the vesting of the RSUs.

Footnote F3

The RSUs vest in three equal annual installments with the first installment having vested on December 18, 2025, the second installment vesting on December 18, 2026 and the final installment vesting on December 18, 2027, subject to Reporting Person's continued service with the Issuer through the applicable vesting date.