COSM
Siokas Grigorios, COSM's CEO, spent $45K of their own money on 218,447 shares at $0, growing their stake 2%. Their tracked buys have a 5% win rate.
+$45K
218,447 sh @ $0
Siokas Grigorios
Director, Chief Executive Officer, 10% Owner · SEC CIK 1660125
Insider at
COSM Cosmos Health Inc.
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Buy track record
How this insider's open-market purchases have performed5%
of buys now in profit
1 up · 19 down
Avg return since buy−52.7%
Median return−57.7%
Best trade+1.9%
Worst trade−69.0%
Buys scored20
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
−13.6%
11% won · 18 trades
After 3 months
−20.1%
11% won · 18 trades
After 6 months
−26.0%
29% won · 7 trades
After 12 months
−42.1%
0% won · 2 trades
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 11, 2026 | COSM | $0 | $45K | +1.6% | — | — | — | — | +1.9% | |
| Jun 10, 2026 | COSM | $0 | $160K | +5.6% | — | — | — | — | −7.9% | |
| Feb 12, 2026 | COSM | $0 | $145K | +4.6% | −4.3% | −17.7% | — | — | −43.7% | |
| Feb 11, 2026 | COSM | $0 | $120K | +3.6% | −11.2% | −25.5% | — | — | −49.0% | |
| Jan 23, 2026 | COSM | $0 | $45K | +1.1% | −24.3% | −28.3% | — | — | −57.8% | |
| Jan 20, 2026 | COSM | $0 | $175K | +4.6% | −24.6% | −22.4% | — | — | −57.6% | |
| Jan 14, 2026 | COSM | $0 | $220K | +6.8% | −18.2% | −25.1% | — | — | −52.9% | |
| Jan 12, 2026 | COSM | $1 | $57K | +1.6% | −26.0% | −35.3% | — | — | −58.3% | |
| Jan 8, 2026 | COSM | $1 | $81K | +2.2% | −18.1% | −42.2% | — | — | −59.5% | |
| Jan 7, 2026 | COSM | $1 | $65K | +1.8% | −18.4% | −42.8% | — | — | −59.7% | |
| Jan 6, 2026 | COSM | $1 | $72K | +2.0% | −16.4% | −42.4% | — | — | −61.0% | |
| Dec 19, 2025 | COSM | $0 | $43K | +1.3% | +1.6% | −35.3% | — | — | −56.9% | |
| Dec 15, 2025 | COSM | $0 | $70K | +2.6% | +30.3% | −15.9% | — | — | −49.5% | |
| Nov 28, 2025 | COSM | $1 | $49K | +1.2% | −23.4% | −37.2% | −59.7% | — | −67.3% | |
| Nov 25, 2025 | COSM | $1 | $35K | +0.9% | −18.2% | −36.6% | −58.1% | — | −66.6% | |
| Nov 21, 2025 | COSM | $1 | $38K | +0.9% | −21.8% | −44.4% | −62.4% | — | −69.0% | |
| Nov 20, 2025 | COSM | $1 | $32K | +0.8% | −15.1% | −40.2% | −54.5% | — | −66.3% | |
| Nov 19, 2025 | COSM | $1 | $40K | +1.0% | −25.0% | −42.1% | −56.4% | — | −67.6% | |
| May 23, 2025 | COSM | $0 | $15.2K | +0.6% | −6.3% | +82.4% | +53.8% | −41.3% | −53.1% | |
| May 22, 2025 | COSM | $0 | $62.8K | +2.4% | −5.2% | +89.8% | +55.5% | −42.9% | −52.6% |
How this is calculated. We score only open-market purchases (SEC code
P) — the buys that carry real signal. Each trade's return is measured from the adjusted closing price on the purchase date to the latest close, accounting for stock splits and dividends. The 1M/3M/6M/12M columns show the same trade's return after each fixed holding period; a dash means that horizon hasn't elapsed yet or isn't priceable. Sales are excluded because insiders sell for many routine reasons. With only 20 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$1.57M
20 trades
Open-market sells
$0
0 trades
Net flow
+$1.57M
Net buying
Total filings
21
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstCOSM
Siokas Grigorios, COSM's CEO, spent $160K of their own money on 701,447 shares at $0, growing their stake 6%. Their tracked buys have a 5% win rate.
+$160K
701,447 sh @ $0
COSM
+$665.1K
2.35M sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $145K of their own money on 388,532 shares at $0, growing their stake 5%. Their tracked buys have a 5% win rate.
+$145K
388,532 sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $120K of their own money on 291,262 shares at $0, growing their stake 4%. Their tracked buys have a 5% win rate.
+$120K
291,262 sh @ $0
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COSM
Siokas Grigorios, COSM's CEO, spent $45K of their own money on 90,325 shares at $0, growing their stake 1%. Their tracked buys have a 5% win rate.
+$45K
90,325 sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $175K of their own money on 353,321 shares at $0, growing their stake 5%. Their tracked buys have a 5% win rate.
+$175K
353,321 sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $220K of their own money on 493,495 shares at $0, growing their stake 7%. Their tracked buys have a 5% win rate.
+$220K
493,495 sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $57K of their own money on 113,185 shares at $1, growing their stake 2%. Their tracked buys have a 5% win rate.
+$57K
113,185 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $81K of their own money on 156,190 shares at $1, growing their stake 2%. Their tracked buys have a 5% win rate.
+$81K
156,190 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $65K of their own money on 124,880 shares at $1, growing their stake 2%. Their tracked buys have a 5% win rate.
+$65K
124,880 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $72K of their own money on 133,953 shares at $1, growing their stake 2%. Their tracked buys have a 5% win rate.
+$72K
133,953 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $43K of their own money on 88,314 shares at $0, growing their stake 1%. Their tracked buys have a 5% win rate.
+$43K
88,314 sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $70K of their own money on 168,472 shares at $0, growing their stake 3%. Their tracked buys have a 5% win rate.
+$70K
168,472 sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $49K of their own money on 76,360 shares at $1, growing their stake 1%. Their tracked buys have a 5% win rate.
+$49K
76,360 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $35K of their own money on 55,732 shares at $1, growing their stake 1%. Their tracked buys have a 5% win rate.
+$35K
55,732 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $38K of their own money on 56,080 shares at $1, growing their stake 1%. Their tracked buys have a 5% win rate.
+$38K
56,080 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $32K of their own money on 51,315 shares at $1, growing their stake 1%. Their tracked buys have a 5% win rate.
+$32K
51,315 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $40K of their own money on 61,614 shares at $1, growing their stake 1%. Their tracked buys have a 5% win rate.
+$40K
61,614 sh @ $1
COSM
Siokas Grigorios, COSM's CEO, spent $15.2K of their own money on 34,004 shares at $0, growing their stake 1%. Their tracked buys have a 5% win rate.
+$15.2K
34,004 sh @ $0
COSM
Siokas Grigorios, COSM's CEO, spent $62.8K of their own money on 141,825 shares at $0, growing their stake 2%. Their tracked buys have a 5% win rate.
+$62.8K
141,825 sh @ $0
Frequently asked questions
How is Siokas Grigorios's win rate calculated?
We take every open-market purchase (SEC code P) we can match to a stock price, then compare the split- and dividend-adjusted price on the purchase date to the most recent close. The win rate is the share of those buys currently trading above the purchase price. Sales and share grants are not scored.
Why are some buys not included in the score?
A purchase is excluded if we can't price it — for example if the ticker is missing from the filing, the company has been delisted, or the security isn't a common stock we can match to market data. Excluded counts are shown next to the scored total.
What do the 1M / 3M / 6M / 12M columns mean?
They show each purchase's return after a fixed holding period — one, three, six, and twelve months from the buy date — using split- and dividend-adjusted prices. This separates good entry timing from simply holding a long-running winner. A dash means that horizon hasn't elapsed yet for that trade, or the stock couldn't be priced at that date.
Does a high win rate mean I should copy this insider?
No. Past performance does not predict future results, sample sizes are often small, and an insider's edge in their own company doesn't transfer to yours. This is context, not a recommendation. InsiderSource is not investment advice.
Where does this data come from?
Trades come from Siokas Grigorios's SEC Form 4 filings on EDGAR. Prices come from public market data and are split/dividend-adjusted. Always verify against the original filings before acting.