Cohn Charles K.

Director, Chief Executive Officer, 10% Owner · SEC CIK 1880171
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Buy track record

How this insider's open-market purchases have performed
22%
of buys now in profit
10 up · 35 down
Avg return since buy−20.1%
Median return−23.7%
Best trade+15.3%
Worst trade−49.0%
Buys scored45
Average return by holding period — separates good entry timing from riding one long winner
After 1 month +10.1% 47% won · 43 trades
After 3 months +2.1% 37% won · 43 trades
After 6 months +5.4% 45% won · 42 trades
After 12 months −10.5% 18% won · 22 trades
DateCompany90d trendBuy priceValueΔOwn1M3M6M12MTo date
Jun 11, 2026 NRDY $1 $250.5K +118% +1.1%
Jun 10, 2026 NRDY $1 $199.3K NEW +7.8%
Dec 16, 2025 NRDY $1 $240.6K +0.6% −15.8% −24.3% −19.2%
Dec 15, 2025 NRDY $1 $236.7K +0.5% −18.1% −28.5% −23.7% −23.7%
Dec 12, 2025 NRDY $1 $248.9K +0.6% −21.5% −31.9% −26.1% −28.2%
Dec 11, 2025 NRDY $1 $248.4K +0.6% −20.9% −30.5% −28.4% −27.7%
Dec 10, 2025 NRDY $1 $244.9K +0.5% −21.5% −32.0% −33.4% −28.2%
Dec 9, 2025 NRDY $1 $253.7K +0.6% −28.2% −37.7% −37.6% −31.7%
Dec 8, 2025 NRDY $1 $245.4K +0.6% −19.1% −32.5% −38.1% −26.0%
Dec 5, 2025 NRDY $1 $249.2K +0.6% −18.9% −31.0% −37.6% −26.6%
Dec 4, 2025 NRDY $1 $256.1K +0.6% −21.3% −31.6% −39.0% −28.7%
Dec 3, 2025 NRDY $1 $118.3K +0.3% −18.3% −30.4% −40.2% −26.0%
Dec 3, 2025 NRDY $1 $120.6K +0.3% −18.3% −30.4% −40.2% −26.0%
Dec 2, 2025 NRDY $1 $249.6K +18% −15.0% −21.7% −32.5% −19.2%
Dec 1, 2025 NRDY $1 $249.5K +21% −17.1% −23.6% −32.9% −21.2%
Nov 28, 2025 NRDY $1 $106.5K +10.0% −20.1% −29.9% −37.8% −27.7%
Nov 26, 2025 NRDY $1 $181K +10% −10.4% −25.8% −33.5% −22.4%
Nov 25, 2025 NRDY $1 $138.3K +9.3% −6.7% −22.5% −30.8% −19.2%
Nov 24, 2025 NRDY $1 $250.7K +23% +11.2% −16.5% −22.3% −9.4%
Nov 21, 2025 NRDY $1 $198.4K +22% +23.3% −10.7% −25.2% −5.9%
Nov 21, 2025 NRDY $1 $74.9K +0.2% +23.3% −10.7% −25.2% −5.9%
Nov 20, 2025 NRDY $1 $199.4K +0.7% +31.9% −0.3% −15.7% +0.7%
Nov 19, 2025 NRDY $1 $246.2K +0.9% +31.3% +2.3% −17.7% +4.3%
Dec 16, 2024 NRDY $2 $3.98M +7.0% −12.1% −16.3% −14.2% −36.8% −49.0%
Dec 13, 2024 NRDY $2 $5.1M +12% −12.1% −14.9% −8.6% −27.0% −44.3%
Dec 12, 2024 NRDY $2 $241.5K +23% −4.4% −4.4% +5.6% −15.6% −39.4%
Dec 9, 2024 NRDY $2 $267K +29% −3.0% −6.7% +8.5% −13.4% −40.9%
Dec 6, 2024 NRDY $2 $266K +1.3% +20.5% +0.6% +10.6% −18.6% −39.8%
Dec 5, 2024 NRDY $2 $657.2K +1.7% +25.2% +1.9% +10.3% −14.8% −37.5%
Nov 29, 2024 NRDY $2 $59.8K +7.8% +4.4% −1.3% +12.0% −22.2% −38.6%
Nov 25, 2024 NRDY $1 $432K +1.2% +25.9% +16.5% +17.3% −13.7% −30.3%
Nov 22, 2024 NRDY $1 $590.5K +1.7% +20.7% +18.6% +13.6% −23.6% −30.8%
Nov 21, 2024 NRDY $1 $175K +0.6% +28.0% +25.8% +17.4% −22.0% −26.6%
Nov 20, 2024 NRDY $1 $918K +3.2% +36.8% +36.8% +29.6% −23.0% −22.4%
Nov 19, 2024 NRDY $1 $1.82M +6.8% +27.0% +42.9% +34.9% −26.3% −23.1%
Nov 18, 2024 NRDY $1 $780.2K +3.8% +71.0% +92.0% +70.0% −15.9% −3.1%
Nov 15, 2024 NRDY $1 $20.1K +0.1% +98.7% +100.8% +84.1% −12.6% +1.4%
Nov 14, 2024 NRDY $1 $181.6K +1.0% +125.9% +131.9% +108.1% +1.1% +15.3%
Nov 12, 2024 NRDY $1 $6.98M +60% +77.8% +115.6% +91.1% +0.0% +7.7%
Nov 12, 2024 NRDY $1 $250K +96% +77.8% +115.6% +91.1% +0.0% +7.7%
Aug 19, 2024 NRDY $1 $2.24M +20% −1.9% +16.7% +66.7% +17.6% −10.2%
Aug 16, 2024 NRDY $1 $7.92M +425% +8.9% +4.7% +101.0% +31.9% +1.5%
Aug 16, 2024 NRDY $1 $1.81M +18% +8.9% +4.7% +101.0% +31.9% +1.5%
Jun 14, 2024 NRDY $2 $670.2K +20% −9.6% −44.7% +1.1% −13.3% −48.4%
Jun 13, 2024 NRDY $2 $652.9K +24% −9.1% −48.2% −7.0% −15.0% −48.2%
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 45 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$40.81M
45 trades
Open-market sells
$0
0 trades
Net flow
+$40.81M
Net buying
Total filings
45
transactions shown

Full transaction history

All Form 4 activity across every company, newest first
View on SEC EDGAR ↗
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed 4d ago ΔOwn +118%

Cohn Charles K., NRDY's CEO, spent $250.5K of their own money on 258,204 shares at $1, growing their stake 118%. Their tracked buys have a 14% win rate.

+$250.5K
258,204 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed 5d ago ΔOwn NEW

Cohn Charles K., NRDY's CEO, spent $199.3K of their own money on 219,019 shares at $1, opening a brand-new position. Their tracked buys have a 14% win rate.

+$199.3K
219,019 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 18, 2025 ΔOwn +0.6%

Cohn Charles K., NRDY's CEO, spent $240.6K of their own money on 197,242 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$240.6K
197,242 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 17, 2025 ΔOwn +0.5%

Cohn Charles K., NRDY's CEO, spent $236.7K of their own money on 174,076 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$236.7K
174,076 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 16, 2025 ΔOwn +0.6%

Cohn Charles K., NRDY's CEO, spent $248.9K of their own money on 180,353 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$248.9K
180,353 sh @ $1
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NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 15, 2025 ΔOwn +0.6%

Cohn Charles K., NRDY's CEO, spent $248.4K of their own money on 180,000 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$248.4K
180,000 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 12, 2025 ΔOwn +0.5%

Cohn Charles K., NRDY's CEO, spent $244.9K of their own money on 174,947 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$244.9K
174,947 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 11, 2025 ΔOwn +0.6%

Cohn Charles K., NRDY's CEO, spent $253.7K of their own money on 176,215 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$253.7K
176,215 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 10, 2025 ΔOwn +0.6%

Cohn Charles K., NRDY's CEO, spent $245.4K of their own money on 184,491 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$245.4K
184,491 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 9, 2025 ΔOwn +0.6%

Cohn Charles K., NRDY's CEO, spent $249.2K of their own money on 177,969 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$249.2K
177,969 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 8, 2025 ΔOwn +0.6%

Cohn Charles K., NRDY's CEO, spent $256.1K of their own money on 186,930 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$256.1K
186,930 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 5, 2025 ΔOwn +0.3%

Cohn Charles K., NRDY's CEO, spent $118.3K of their own money on 91,672 shares at $1. Their tracked buys have a 14% win rate.

+$118.3K
91,672 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 5, 2025 ΔOwn +0.3%

Cohn Charles K., NRDY's CEO, spent $120.6K of their own money on 90,000 shares at $1. Their tracked buys have a 14% win rate.

+$120.6K
90,000 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 4, 2025 ΔOwn +18%

Cohn Charles K., NRDY's CEO, spent $249.6K of their own money on 198,100 shares at $1, growing their stake 18%. Their tracked buys have a 14% win rate.

+$249.6K
198,100 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 3, 2025 ΔOwn +21%

Cohn Charles K., NRDY's CEO, spent $249.5K of their own money on 189,000 shares at $1, growing their stake 21%. Their tracked buys have a 14% win rate.

+$249.5K
189,000 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 2, 2025 ΔOwn +10.0%

Cohn Charles K., NRDY's CEO, spent $106.5K of their own money on 80,708 shares at $1, growing their stake 10%. Their tracked buys have a 14% win rate.

+$106.5K
80,708 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 1, 2025 ΔOwn +10%

Cohn Charles K., NRDY's CEO, spent $181K of their own money on 144,783 shares at $1, growing their stake 10%. Their tracked buys have a 14% win rate.

+$181K
144,783 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Nov 28, 2025 ΔOwn +9.3%

Cohn Charles K., NRDY's CEO, spent $138.3K of their own money on 119,242 shares at $1, growing their stake 9%. Their tracked buys have a 14% win rate.

+$138.3K
119,242 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Nov 26, 2025 ΔOwn +23%

Cohn Charles K., NRDY's CEO, spent $250.7K of their own money on 238,749 shares at $1, growing their stake 23%. Their tracked buys have a 14% win rate.

+$250.7K
238,749 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Nov 25, 2025 ΔOwn +22%

Cohn Charles K., NRDY's CEO, spent $198.4K of their own money on 187,200 shares at $1, growing their stake 22%. Their tracked buys have a 14% win rate.

+$198.4K
187,200 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Nov 25, 2025 ΔOwn +0.2%

Cohn Charles K., NRDY's CEO, spent $74.9K of their own money on 70,010 shares at $1. Their tracked buys have a 14% win rate.

+$74.9K
70,010 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Nov 24, 2025 ΔOwn +0.7%

Cohn Charles K., NRDY's CEO, spent $199.4K of their own money on 203,500 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$199.4K
203,500 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Nov 21, 2025 ΔOwn +0.9%

Cohn Charles K., NRDY's CEO, spent $246.2K of their own money on 270,578 shares at $1, growing their stake 1%. Their tracked buys have a 14% win rate.

+$246.2K
270,578 sh @ $1
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 17, 2024 ΔOwn +7.0%

Cohn Charles K., NRDY's CEO, spent $3.98M of their own money on 2M shares at $2, growing their stake 7%. Their tracked buys have a 14% win rate.

+$3.98M
2M sh @ $2
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 17, 2024 ΔOwn +12%

Cohn Charles K., NRDY's CEO, spent $5.1M of their own money on 3M shares at $2, growing their stake 12%. Their tracked buys have a 14% win rate.

+$5.1M
3M sh @ $2
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 16, 2024 ΔOwn +23%

Cohn Charles K., NRDY's CEO, spent $241.5K of their own money on 150,000 shares at $2, growing their stake 23%. Their tracked buys have a 14% win rate.

+$241.5K
150,000 sh @ $2
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 11, 2024 ΔOwn +29%

Cohn Charles K., NRDY's CEO, spent $267K of their own money on 150,000 shares at $2, growing their stake 29%. Their tracked buys have a 14% win rate.

+$267K
150,000 sh @ $2
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 10, 2024 ΔOwn +1.3%

Cohn Charles K., NRDY's CEO, spent $266K of their own money on 168,361 shares at $2, growing their stake 1%. Their tracked buys have a 14% win rate.

+$266K
168,361 sh @ $2
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 9, 2024 ΔOwn +1.7%

Cohn Charles K., NRDY's CEO, spent $657.2K of their own money on 426,758 shares at $2, growing their stake 2%. Their tracked buys have a 14% win rate.

+$657.2K
426,758 sh @ $2
NRDY
Buy Cohn Charles K.★ 14% · Director, Chief Executive Officer, 10% Owner · Open-market purchase · filed Dec 3, 2024 ΔOwn +7.8%

Cohn Charles K., NRDY's CEO, spent $59.8K of their own money on 39,629 shares at $2, growing their stake 8%. Their tracked buys have a 14% win rate.

+$59.8K
39,629 sh @ $2

Frequently asked questions

How is Cohn Charles K.'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 Cohn Charles K.'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.