KYMR
−$1.57M
16,084 sh @ $98
Booth Bruce
Director · SEC CIK 1451612Advertisement
Buy track record
How this insider's open-market purchases have performed100%
of buys now in profit
1 up · 0 down
Avg return since buy+92.3%
Median return+92.3%
Best trade+92.3%
Worst trade+92.3%
Buys scored1
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
−33.0%
0% won · 1 trade
After 3 months
−42.0%
0% won · 1 trade
After 6 months
−9.9%
0% won · 1 trade
After 12 months
+70.9%
100% won · 1 trade
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Feb 10, 2025 | SION | $18 | $1.08M | +8.0% | −33.0% | −42.0% | −9.9% | +70.9% | +92.3% |
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 1 scored trade, treat this as a small sample, not a verdict.
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Open-market buys
$1.08M
1 trades
Open-market sells
$249.44M
226 trades
Net flow
−$248.36M
Net selling
Total filings
235
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstKYMR
−$2.56M
25,976 sh @ $99
KYMR
−$5.22M
52,442 sh @ $100
KYMR
−$5.64M
56,348 sh @ $100
KYMR
−$670.3K
6,597 sh @ $102
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KYMR
−$921.3K
8,990 sh @ $102
KYMR
−$200.8K
2,179 sh @ $92
KYMR
−$27K
286 sh @ $94
KYMR
−$156.8K
1,648 sh @ $95
KYMR
−$280.9K
2,919 sh @ $96
KYMR
−$219.5K
2,247 sh @ $98
KYMR
−$355.2K
3,603 sh @ $99
KYMR
−$728.8K
7,319 sh @ $100
KYMR
−$789.2K
7,879 sh @ $100
KYMR
−$93.3K
918 sh @ $102
KYMR
−$128.4K
1,253 sh @ $102
KYMR
−$5.69M
62,897 sh @ $90
KYMR
−$2.97M
32,359 sh @ $92
KYMR
−$522.7K
5,672 sh @ $92
KYMR
−$797K
8,809 sh @ $90
KYMR
−$415.7K
4,526 sh @ $92
KYMR
−$73.1K
793 sh @ $92
KYMR
+$234.8K
11,741 sh @ $20
KYMR
−$1.06M
11,741 sh @ $90
KYMR
−$8.33M
92,169 sh @ $90
KYMR
−$1.17M
12,902 sh @ $90
KYMR
+$80K
5,641 sh @ $14
KYMR
+$5.2K
259 sh @ $20
KYMR
−$530.8K
5,900 sh @ $90
KYMR
−$7.9K
88 sh @ $90
Frequently asked questions
How is Booth Bruce'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 Booth Bruce'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.