Glenn Frank Short

Executive

Insider activity · 24 months0 buys1 saleCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 1 saleApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Companies

▲ Purchases (0 ops.)

—

▼ Sales (1 ops.)

€16k

Latest filing published 11 Sept 2026 for AtaiBeckley Inc..

Filing timeline

BuySale

Glenn Frank Short

Insider track record

Disclosed buys

Disclosed sells

Not enough buy signals with a settled T+90 horizon to measure a track record yet.

Signal history

No signal scores available.

Glenn Frank Short: trading record in brief

This profile gathers the share dealings of Glenn Frank Short across 2 companies, led by ATAI Life Sciences N.V. and AtaiBeckley Inc. Over a trading history stretching from 14 March 2025 to 11 September 2026, the count stands at 3 filings.

Sales make up the whole of the open-market record (1 sale, €16k). The rest of the record consists of 1 option exercise.

On 11 September 2026 came the latest disclosure, a transaction in AtaiBeckley Inc. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.