Insider · CIK 0002094202
Cosmo Feilding-Mellen
Files at ATAI (ATAI Life Sciences N.V.), ATAI (AtaiBeckley Inc.). First filing Jan 6, 2026, latest Jan 6, 2026.
In brief
Cosmo Feilding-Mellen files SEC Form 4 as director at ATAI (AtaiBeckley Inc.), and also at ATAI (ATAI Life Sciences N.V.). Since Jan 6, 2026, Cosmo Feilding-Mellen has reported 0 open-market buys worth $0 and 1 open-market sell worth $154k, the latest filed on Jan 6, 2026.
A track record needs three past buys with six months of prices behind them; Cosmo Feilding-Mellen has 0, so none is measured yet.
The newest scored trade: sold $154k of ATAI on Jan 2, 2026, filed Jan 6, 2026, scored 26 (weak). In the last 12 months: 0 buys worth $0 and 1 sell worth $154k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
ATAI: AtaiBeckley Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Mar 11, 2026 | ATAI AtaiBeckley Inc. | 750,000 0.21% of outstanding | $3.0M | Mar 11, 2026 | $2.7M |
| Feb 26, 2026 | ATAI Atai Beckley N.V. | 750,000 0.21% of outstanding | $3.0M | Feb 26, 2026 | none |
Transactions
Every row this insider has filed, 6 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jan 2, 2026 | ATAI AtaiBeckley Inc. | SOpen-market sale Common Stock | -39,594 | $3.90 | $154k | 7,663,396 | Jan 6, 2026 |
| Nov 25, 2025 | ATAI ATAI Life Sciences N.V. | DDisposition to issuer Stock Optionderivative | -40,400 | $0.00 | $0 | 0 | Nov 26, 2025 |
| Nov 25, 2025 | ATAI ATAI Life Sciences N.V. | AGrant or award Stock Optionderivative | +10,000 | $0.00 | $0 | 10,000 | Nov 26, 2025 |
| Nov 5, 2025 | ATAI ATAI Life Sciences N.V. | AGrant or award Common Shares | +7,702,990 | - | - | 7,702,990 | Nov 6, 2025 |
| Nov 5, 2025 | ATAI ATAI Life Sciences N.V. | AGrant or award Stock Optionderivative | +103,000 | $0.00 | $0 | 103,000 | Nov 6, 2025 |
| Nov 5, 2025 | ATAI ATAI Life Sciences N.V. | AGrant or award Stock Optionderivative | +40,400 | $0.00 | $0 | 40,400 | Nov 6, 2025 |
Questions about Cosmo Feilding-Mellen
Answered from the filings on this page, as of the latest one.
Is Cosmo Feilding-Mellen buying or selling?
In the last 12 months Cosmo Feilding-Mellen reported 0 open-market buys worth $0 and 1 open-market sell worth $154k on SEC Form 4; the latest was sold $154k of ATAI on Jan 2, 2026. Grants, option exercises and tax withholding are not counted.
How did Cosmo Feilding-Mellen's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Cosmo Feilding-Mellen has 0.
Where does Cosmo Feilding-Mellen file Form 4?
Cosmo Feilding-Mellen has filed Form 4 at ATAI (AtaiBeckley Inc.); ATAI (ATAI Life Sciences N.V.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.