Insider · SEC Form 4 filer

Grigorios Siokas

Past buys: 4 of 7 beat

Companies

Where they file as an insider

Cosmos Health (COSM) CEO, Director, 10% owner Latest filing Jul 30, 2026

Track record

Did their buys beat the typical stock?

Open-market buys43
Quarters checked 6 months later7
Beat the typical stock 4 of 7
Quarters too new to check2

4 of 7 checked quarters beat the typical stock. A past record is data, not a forecast.

Cosmos Health (COSM) Bought Jul 29–30, 2026 · $208K · 1.12M shares Too new Too new. Its 6-month check uses prices as of Mar 31, 2027.
Cosmos Health (COSM) Bought Jun 10–11, 2026 · $207K · 919,894 shares Too new Too new. Its 6-month check uses prices as of Dec 31, 2026.
Cosmos Health (COSM) Bought Jan 6–Feb 12, 2026 · $982K · 2.15M shares Beat typical Mar 31, 2026 $0.32 → Sep 30, 2026 $0.43 · +35.5% (typical stock +1.8%)
Cosmos Health (COSM) Bought Nov 19–Dec 19, 2025 · $308K · 557,887 shares Behind typical Dec 31, 2025 $0.50 → Jun 30, 2026 $0.18 · −62.9% (typical stock +4.6%)
Cosmos Health (COSM) Bought Apr 21–May 23, 2025 · $787K · 2.04M shares Beat typical Jun 30, 2025 $0.42 → Dec 31, 2025 $0.50 · +18.6% (typical stock +2.2%)
Cosmos Health (COSM) Bought Jan 13–Mar 4, 2025 · $648K · 1.05M shares Beat typical Mar 31, 2025 $0.44 → Sep 30, 2025 $1.11 · +154.6% (typical stock +8.0%)
Cosmos Health (COSM) Bought Dec 20, 2024 · $149K · 257,334 shares Behind typical Dec 31, 2024 $0.67 → Jun 30, 2025 $0.42 · −37.2% (typical stock −3.0%)
Cosmos Health (COSM) Bought Feb 16, 2024 · $49.8K · 60,000 shares Beat typical Mar 31, 2024 $0.71 → Sep 30, 2024 $0.88 · +23.4% (typical stock +3.5%)
Cosmos Health (COSM) Bought Oct 12, 2023 · $159K · 6,712 shares Behind typical Dec 31, 2023 $1.41 → Jun 30, 2024 $1.04 · −26.2% (typical stock −0.6%)

Each row is one stock in one quarter, however many buys it took. We take the stock's price at the end of that quarter and again 6 months later, and compare it with the typical stock over the same dates. Prices are quarter-end values from funds' 13F reports (the middle value across 3 or more funds), through Sep 30, 2026. Moves past 3 times up or down, mostly stock splits, are left out. How we tested this.

Past results. This is data, not advice.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

This is data, not investment advice. About StockToast · Your watchlist