SEC Form 4
Birkenstock Holding plc (BIRK) insider trading
In the 12 months to Oct 26, 2026, 2 BIRK insiders reported open-market sales of $1.1B across 2 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $1.1B
- 2 filings · 2 insiders
- Open-market purchases
- $0
- 0 filings
Who traded BIRK, and when
- Sale
BIRK daily close from Oct 27, 2025 to Oct 26, 2026, between $30.01 and $48.97, last $32.07. 2 sale and 0 purchase filings by 2 insiders, marked at their filing dates. James Michael Chu, Director: sold $1.1B across 1 filing, first filed Aug 17, 2026, last Aug 17, 2026. Mehdi Nico Bouyakhf, President EMEA: sold $3.8M across 1 filing, first filed Jun 9, 2026, last Jun 9, 2026.
Largest mark · tap a row for others
James Michael Chu · Director
Sale $1,102,769,135
28,146,226 shares
Filed Aug 17, 2026
Close on filing date $37.86
James Michael Chu · Director
Director
$1.1B soldMehdi Nico Bouyakhf · President EMEA
President EMEA
$3.8M soldOpen-market trades
2 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| James Michael Chu | Director | $1.1B | — | 1 | — | |
| Mehdi Nico Bouyakhf | President EMEA | $3.8M | — | 1 | — |
| Filed | Insider | Type | Shares | Value | Held after | Source |
|---|---|---|---|---|---|---|
traded | James Michael Chu Director | Sale | 28,146,226 ordinary shares | $1.1B | 71,270,287 | |
traded | Mehdi Nico Bouyakhf President EMEA | Sale | 90,000 ordinary shares | $3.8M | 31,153 |
Shares are as filed (ordinary shares or ADS); values are as converted to US$ in the filing.
GET /stocks/filings/vX/form-4?tickers=BIRK&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"BIRK"
],
"issuer_cik": "0001977102",
"owner_cik": "0001544498",
"accession_number": "0001193125-26-354024",
"form_type": "4",
"filing_date": "2026-08-17",
"period_of_report": "2026-08-17",
"issuer_name": "Birkenstock Holding plc",
"issuer_trading_symbol": "BIRK",
"owner_name": "Chu James Michael",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Ordinary shares, no par value",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-17",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 28146226,
"transaction_price_per_share": 39.18,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 71270287,
"transaction_value": 1102769134.68,
"direct_or_indirect": "I",
"nature_of_ownership": "By BK LC Lux MidCo S.a r.l.",
"footnotes": [
{
"id": "F1",
"description": "The reported price represents the price received from the underwriter by BK LC Lux MidCo S.a r.l. (\"MidCo\") in connection with an underwritten block trade."
},
{
"id": "F2",
"description": "The reported securities are held directly by MidCo. The management of MidCo is controlled by BK LC Lux SCA. BK LC Lux GP S.a r.l. is the general partner of BK LC Lux SCA. The management of BK LC Lux GP S.a r.l. is controlled by LC9 Caledonia AIV GP, LLP. LC9 Caledonia AIV GP, LLP is managed by its members, Catterton Caledonia 1 Limited (\"Caledonia 1\") and Catterton Caledonia 2 Limited (\"Caledonia 2\"). The management of each of Caledonia 1 and Caledonia 2 is controlled by its directors. The Reporting Person's role as a director of Caledonia 1 and Caledonia 2 may be deemed to give him voting and dispositive power with respect to the shares held directly by MidCo."
},
{
"id": "F3",
"description": "The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein."
}
]
},
{
"tickers": [
"BIRK"
],
"issuer_cik": "0001977102",
"owner_cik": "0001997343",
"accession_number": "0001193125-26-263758",
"form_type": "4",
"filing_date": "2026-06-09",
"period_of_report": "2026-06-05",
"issuer_name": "Birkenstock Holding plc",
"issuer_trading_symbol": "BIRK",
"owner_name": "Bouyakhf Mehdi Nico",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "President EMEA",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Ordinary Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-06-08",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 30000,
"transaction_price_per_share": 43.5,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 31153,
"transaction_value": 1305000,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F2",
"description": "The price reported in Column 4 of Row 2 is a weighted average price. These Ordinary Shares were sold in multiple transactions at prices ranging from $43.40 to $43.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Ordinary Shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."
}
]
}
]
}
// 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) · 8 records
- Option exercises4 records
- Tax withholding4 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.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
How current is BIRK’s insider data?
These are BIRK 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.
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Track BIRK 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 BIRK 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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