SEC Form 4
Fluence Energy, Inc. (FLNC) insider trading
In the 12 months to Oct 26, 2026, 5 FLNC insiders reported open-market sales of $479.1M across 5 filings; 2 insiders bought $125.1K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $479.1M
- 5 filings · 5 insiders
- Open-market purchases
- $125.1K
- 2 filings
- Pre-arranged sales (10b5-1)
- 2 of 5
- $879.7K of $479.1M sold (0%)
Who traded FLNC, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
FLNC daily close from Oct 27, 2025 to Oct 26, 2026, between $5.58 and $32.23, last $5.58. 5 sale and 2 purchase filings by 6 insiders, marked at their filing dates. AES CORP, 10% owner: sold $211.4M across 1 filing, first filed May 19, 2026, last May 19, 2026. Holding Sarl SPT, 10% owner: sold $206.6M across 1 filing, first filed May 15, 2026, last May 15, 2026. Investment Authority Qatar, 10% owner: sold $60.2M across 1 filing, first filed May 18, 2026, last May 18, 2026. John Zahurancik, SVP & CCSO: sold $754.7K across 1 filing, first filed Jun 26, 2026, last Jun 26, 2026. Heynitz Harald von, Director: sold $125.0K and bought $51.5K across 2 filings, first filed Jun 16, 2026, last Sep 22, 2026. Herman E. Bulls, Director: bought $73.6K across 1 filing, first filed Sep 22, 2026, last Sep 22, 2026.
Largest mark · tap a row for others
AES CORP · 10% owner
Sale $211,394,694
10,066,414 shares at $21.00 avg
Filed May 19, 2026 · traded May 15
Close on filing date $17.91
AES CORP · 10% owner
10% owner
$211.4M soldHolding Sarl SPT · 10% owner
10% owner
$206.6M soldInvestment Authority Qatar · 10% owner
10% owner
$60.2M soldJohn Zahurancik · SVP & CCSO
SVP & CCSO
$754.7K soldHeynitz Harald von · Director
Director
$125.0K sold$51.5K boughtHerman E. Bulls · Director
Director
$73.6K boughtOpen-market trades
7 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| AES CORP | 10% owner | $211.4M | — | 1 | — | |
| Holding Sarl SPT | 10% owner | $206.6M | — | 1 | — | |
| Investment Authority Qatar | 10% owner | $60.2M | — | 1 | — | |
| John Zahurancik | SVP & CCSO | $754.7K | — | 1 | 100% of sales | |
| Heynitz Harald von | Director | $125.0K | $51.5K | 2 | 100% of sales | |
| Herman E. Bulls | Director | — | $73.6K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Heynitz Harald von Director | Purchase | 7,000 | $7.36 | $51.5K | 65,550 | |
traded | Herman E. Bulls Director | Purchase | 10,000 | $7.36 | $73.6K | 169,550 | |
traded | John Zahurancik SVP & CCSO | SalePre-arranged (10b5-1) | 31,974 | $23.60 | $754.7K | 71,171 | |
traded | Heynitz Harald von Director | SalePre-arranged (10b5-1) | 5,000 | $25.00 | $125.0K | 58,550 | |
traded | AES CORP 10% owner | Sale | 10,066,414 | $21.00 | $211.4M | 0 | |
traded | Investment Authority Qatar 10% owner | Sale | 2,867,172 | $21.00 | $60.2M | 11,801,103 | |
traded | Holding Sarl SPT 10% owner | Sale | 10,066,414 | $20.53 | $206.6M | 21,694,717 |
GET /stocks/filings/vX/form-4?tickers=FLNC&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"FLNC"
],
"issuer_cik": "0001868941",
"owner_cik": "0001205068",
"accession_number": "0001868941-26-000050",
"form_type": "4",
"filing_date": "2026-09-22",
"period_of_report": "2026-09-21",
"issuer_name": "Fluence Energy, Inc.",
"issuer_trading_symbol": "FLNC",
"owner_name": "BULLS HERMAN E",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-21",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 10000,
"transaction_price_per_share": 7.36,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 169550,
"transaction_value": 73600,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"FLNC"
],
"issuer_cik": "0001868941",
"owner_cik": "0001884307",
"accession_number": "0001868941-26-000048",
"form_type": "4",
"filing_date": "2026-09-22",
"period_of_report": "2026-09-21",
"issuer_name": "Fluence Energy, Inc.",
"issuer_trading_symbol": "FLNC",
"owner_name": "von Heynitz Harald",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-21",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 7000,
"transaction_price_per_share": 7.36,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 65550,
"transaction_value": 51520,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 34 records
- Option exercises17 records
- Tax withholding12 records
- Tax withholding (sold to cover)1 record
- Gifts1 record
- Other3 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.
Frequently asked questions
Has Fluence Energy, Inc.'s CEO sold stock?
No. Julian Nebreda (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is FLNC’s insider data?
These are FLNC Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
Build with AI
Track FLNC insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for FLNC every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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