MarketPeel
Insider Trading Intelligence
WE

Willem Elfrink

BEAT
DIRECTOR · HEARTBEAM, INC. · CIK 0001893194
FILING MIX · LIFETIME87%/13%
BUYS
13
SELLS
2
TOTAL VALUE
$1.57M
COMPANIES
1
ACTIVE SINCE
Nov 2021
HOLDINGS NOW
538,667
AVG SELL PX
$0.00
TRADE KIND
SHOWING 15 / 15
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 4 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Willem Elfrink, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+50.00%-1.74%+1.98%-3.72%-3.72%
14d2+100.00%+3.52%+2.78%+0.74%+0.74%
30d2+50.00%-0.41%+1.14%-1.55%-1.55%
60d2+0.00%-30.71%-0.26%-30.45%-30.45%
90d2(1 pending)+0.00%-46.39%-3.73%-42.66%-42.66%
180d2(1 pending)+0.00%-61.94%-20.40%-41.54%-41.54%
1y2(1 pending)+100.00%+43.89%-15.24%+59.13%+59.13%
2y2(1 pending)+0.00%-53.89%+5.32%-59.21%-59.21%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
BEAT · 538,667 shares · as of Apr 16, 2026
0134,667269,334404,000538,66720222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 13 buys / 2 sellsCOVERAGE · 19 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
BEAT
HEARTBEAM, INC.
PURCHASE
187,500$0.80$150.0K538,667Apr 16, 2026Apr 16, 2026View →
BEAT
HEARTBEAM, INC.
PURCHASEGRANT
Stock grant
51,72451,724Feb 9, 2026Mar 23, 2026View →
BEAT
HEARTBEAM, INC.
PURCHASEGRANT
Stock grant
33,185317,982Jun 12, 2024Jun 20, 2024View →
BEAT
HEARTBEAM, INC.
PURCHASEGRANT
Stock grant
23,961284,797Jul 13, 2023Jul 18, 2023View →
BEAT
HEARTBEAM, INC.
SALE
43,636$0.00$1310Feb 12, 2023Feb 14, 2023View →
BEAT
HEARTBEAM, INC.
PURCHASE
3,640$2.75$10.0K316,150Feb 9, 2023Feb 13, 2023View →
BEAT
HEARTBEAM, INC.
PURCHASE
3,640$2.75$10.0K0Feb 9, 2023Feb 13, 2023View →
BEAT
HEARTBEAM, INC.
SALE
125,351312,510Feb 9, 2023Feb 13, 2023View →
BEAT
HEARTBEAM, INC.
PURCHASEGRANT
Stock grant
55,147221,573Jul 15, 2022Jul 19, 2022View →
BEAT
HEARTBEAM, INC.
PURCHASEGRANT
Stock grant
50,00050,000Jun 16, 2022Jun 21, 2022View →
BEAT
HEARTBEAM, INC.
PURCHASEGRANT
Stock grant
10,00010,000Dec 21, 2021Jan 6, 2022View →
BEAT
HEARTBEAM, INC.
PURCHASE
10,00010,000Dec 21, 2021Dec 23, 2021View →
BEAT
HEARTBEAM, INC.
PURCHASE
60,972$4.20$256.1K166,426Nov 11, 2021Nov 15, 2021View →
BEAT
HEARTBEAM, INC.
PURCHASE
106,825$4.20$448.7K273,251Nov 11, 2021Nov 15, 2021View →
BEAT
HEARTBEAM, INC.
PURCHASE
164,610$4.20$691.4K437,861Nov 11, 2021Nov 15, 2021View →
Other insiders · BEAT
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About this filer
CIK 0001893194
ROLE
Director
PRIMARY
BEAT
COMPANIES
1
ACTIVE SINCE
Nov 2021
MARKETPEEL · /INSIDER/0001893194DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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