Fluence Energy (NASDAQ: FLNC) director sells 5,000 shares under 10b5-1 plan

Rhea-AI Filing Summary

Fluence Energy, Inc. director Harald von Heynitz sold 5,000 shares of Class A Common Stock at $25.00 per share in an open-market transaction. After this sale, he directly holds 58,550 shares. The transaction was executed under an existing Rule 10b5-1 trading plan and is permitted under a lock-up agreement related to an underwritten public offering.

Insider Trade Summary 10b5-1

Net Seller: 5,000 shares ($125,000)

Net Sell 1 txn

Insider von Heynitz Harald

Role null

Sold 5,000 shs ($125K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	5,000	$25.00	$125K

Holdings After Transaction: Class A Common Stock — 58,550 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 5,000 shares Sale price: $25.00 per share Shares owned after: 58,550 shares +1 more

4 metrics

Shares sold 5,000 shares Class A Common Stock open-market sale

Sale price $25.00 per share Reported transaction price

Shares owned after 58,550 shares Post-transaction direct holdings

Net insider activity -5,000 shares Net buy/sell shares in this filing

Key Terms

Rule 10b5-1 trading plan, lock-up agreement, underwritten public offering, Class A Common Stock

4 terms

Rule 10b5-1 trading plan regulatory

"The sale reported in this Form 4 was effected pursuant to an existing Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

lock-up agreement financial

"The reporting person is subject to a lock-up agreement that expires at the close of business on June 26, 2026"

A lock-up agreement is a contract that prevents company insiders and early investors from selling their shares for a fixed period after a stock sale, often after an initial public offering. It matters to investors because it temporarily limits the number of shares that can hit the market, which can keep the share price steadier; when the lock-up ends, a sudden increase in available shares can create extra volatility, revealing insiders’ confidence or lack thereof.

underwritten public offering financial

"entered into with the representatives of the underwriters in connection with an underwritten public offering of the Issuer's Class A common stock"

An underwritten public offering is when a company sells new shares of its stock to the public with the help of a financial firm, called an underwriter. The underwriter agrees to buy all the shares upfront, reducing the company's risk, and then sells them to investors. This process helps companies raise money quickly and confidently from a wide range of buyers.

Class A Common Stock financial

"The reporting person is subject to a lock-up agreement that expires ... in connection with an underwritten public offering of the Issuer's Class A common stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/16/2026 - 04:35 PM Accepted by SEC EDGAR 06/16/2026 - 04:35 PM Learn about SEC filing dates

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).

X

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^*

von Heynitz Harald

(Last) (First) (Middle)

C/O FLUENCE ENERGY, INC.

4601 FAIRFAX DRIVE, SUITE 600

(Street)

ARLINGTON VIRGINIA 22203

(City) (State) (Zip)

UNITED STATES

(Country)

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

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)
06/15/2026

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
Class A Common Stock	06/15/2026		S		5,000(1)	D	$25	58,550	D

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

Explanation of Responses:

1. The sale reported in this Form 4 was effected pursuant to an existing Rule 10b5-1 trading plan adopted by the reporting person on March 16, 2026. The reporting person is subject to a lock-up agreement that expires at the close of business on June 26, 2026, that was entered into with the representatives of the underwriters in connection with an underwritten public offering of the Issuer's Class A common stock (the "Offering"). The sale of shares is a permissible exemption under the terms of the lock-up agreement.

Remarks:

	/s/ Leah Patterson as Attorney-in-fact for Harald von Heynitz	06/16/2026
	** 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)

FAQ

What insider transaction did Harald von Heynitz report for FLNC?

Harald von Heynitz reported selling 5,000 shares of Fluence Energy Class A Common Stock at $25.00 per share. The open-market sale was disclosed on a Form 4 and reflects a routine insider trading activity with remaining holdings reported.

How many Fluence Energy (FLNC) shares does Harald von Heynitz hold after the sale?

After the reported transaction, Harald von Heynitz directly holds 58,550 shares of Fluence Energy Class A Common Stock. This figure comes from the post-transaction ownership line in the Form 4, showing his continuing equity stake following the 5,000-share sale.

At what price did the FLNC director sell shares in this Form 4 filing?

The director sold 5,000 Fluence Energy Class A Common Stock shares at $25.00 per share. This per-share sale price is explicitly stated in the Form 4 and represents the consideration received in the open-market transaction on the reported trade date.

Was the Fluence Energy (FLNC) insider sale made under a Rule 10b5-1 plan?

Yes. The footnote explains the sale was carried out under an existing Rule 10b5-1 trading plan adopted by Harald von Heynitz. Such plans pre-schedule trades, indicating the transaction timing was determined in advance rather than being a discretionary, spur-of-the-moment decision.

How does a lock-up agreement affect this FLNC insider’s share sale?

The reporting person is subject to a lock-up agreement tied to an underwritten public offering of Fluence Energy stock. The footnote notes this particular 5,000-share sale is specifically allowed as an exemption under the lock-up’s terms, so it does not violate those restrictions.