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Grigorios Siokas

CIK 1660125 · Chief Executive Officer · last filed 2026-06-12

Grigorios Siokas is a Chief Executive Officer who has filed 94 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing shows the insider bought $45.0K of COSM on Jun 12, 2026. Across all open-market trades the lifetime net is +$12.6M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $2.6M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$2.63M

Companies

1

Total Filings

94

Lifetime Open-Market Net

$12.61M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
COSM Chief Executive Officer 13,481,808 $0.19 $2.63M $12.61M 56 2026-06-12

Recent Filings

94 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-06-12 COSM Buy (P) +218,447 $45.0K EDGAR
2026-06-12 COSM Buy (P) +701,447 $160.0K EDGAR
2026-06-11 COSM Mixed +2,350,000 $665.0K EDGAR
2026-02-13 COSM Buy (P) +388,532 $145.0K EDGAR
2026-02-12 COSM Buy (P) +291,262 $120.0K EDGAR
2026-01-26 COSM Buy (P) +90,325 $45.0K EDGAR
2026-01-21 COSM Buy (P) +353,321 $175.0K EDGAR
2026-01-15 COSM Buy (P) +493,495 $220.0K EDGAR
2026-01-13 COSM Buy (P) +113,185 $57.0K EDGAR
2026-01-09 COSM Buy (P) +156,190 $81.0K EDGAR
Showing 1–10 of 94
Page 1 of 10
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.