MBX
Heron Patrick J, MBX's 10% owner, spent $10M of their own money on 625,000 shares at $16, growing their stake 16%.
+$10M
625,000 sh @ $16
Heron Patrick J
Director, 10% Owner · SEC CIK 1365617Advertisement
Buy track record
How this insider's open-market purchases have performed100%
of buys now in profit
32 up · 0 down
Avg return since buy+159.2%
Median return+129.5%
Best trade+997.1%
Worst trade+4.3%
Buys scored32 (+1 n/a)
Average return by holding period — separates good entry timing from riding one long winner
After 1 month
−2.1%
31% won · 32 trades
After 3 months
+12.6%
78% won · 32 trades
After 6 months
+60.1%
77% won · 31 trades
After 12 months
+72.2%
93% won · 30 trades
| Date | Company | 90d trend | Buy price | Value | ΔOwn | 1M | 3M | 6M | 12M | To date |
|---|---|---|---|---|---|---|---|---|---|---|
| Jan 23, 2026 | MIRM | $68 | $9M | +40% | +12.3% | −2.5% | — | — | +8.2% | |
| Sep 26, 2025 | MBX | $18 | $12M | +15% | −0.4% | +76.5% | +61.6% | — | +137.5% | |
| Jun 13, 2025 | ARQT | $13 | $34.6K | +11% | +18.4% | +26.1% | +115.6% | +90.5% | +95.2% | |
| Jun 5, 2025 | ARQT | $13 | $5.1K | +1.5% | −0.9% | +26.9% | +130.9% | +57.1% | +94.1% | |
| Jun 4, 2025 | ARQT | $13 | $25.2K | +8.4% | +0.9% | +22.2% | +134.8% | +65.4% | +97.6% | |
| May 22, 2025 | ARQT | $14 | $34.4K | +13% | +5.4% | +17.0% | +125.2% | +52.7% | +91.9% | |
| May 21, 2025 | ARQT | $14 | $34.4K | +14% | +4.7% | +14.8% | +114.3% | +52.7% | +90.6% | |
| May 15, 2025 | ARQT | $14 | $34.3K | +17% | −1.7% | +23.9% | +92.0% | +56.4% | +92.4% | |
| May 14, 2025 | ARQT | $14 | $86.7K | +73% | −1.5% | +17.5% | +83.8% | +58.6% | +92.8% | |
| May 13, 2025 | ARQT | $14 | $32.7K | +38% | −2.8% | +13.1% | +65.4% | +56.9% | +89.7% | |
| May 9, 2025 | ARQT | $14 | $85.7K | NEW | +5.0% | +4.9% | +75.5% | +57.0% | +93.8% | |
| Mar 17, 2025 | MIRM | $44 | $923 | — | −13.4% | +12.3% | +62.0% | +113.8% | +126.0% | |
| Mar 14, 2025 | MIRM | $44 | $23.3K | +0.3% | −10.6% | +13.9% | +67.5% | +109.2% | +130.4% | |
| Mar 11, 2025 | MIRM | $44 | $42.2K | +0.6% | −10.2% | +10.0% | +72.5% | +108.2% | +131.6% | |
| Mar 10, 2025 | MIRM | $43 | $32.3K | +0.5% | −9.0% | +13.9% | +74.1% | +111.4% | +137.2% | |
| Mar 10, 2025 | MIRM | $43 | $25K | +0.3% | −9.0% | +13.9% | +74.1% | +111.4% | +137.2% | |
| Mar 7, 2025 | MIRM | $43 | $25.1K | +0.4% | −5.7% | +8.3% | +78.1% | +104.3% | +134.8% | |
| Mar 6, 2025 | MIRM | $44 | $58.6K | +0.8% | −5.6% | +6.8% | +78.2% | +98.8% | +135.0% | |
| Mar 5, 2025 | MIRM | $45 | $11.9K | +0.2% | −8.2% | +0.0% | +70.4% | +96.8% | +128.6% | |
| Mar 4, 2025 | MIRM | $46 | $58.3K | +0.8% | −7.1% | −1.3% | +64.0% | +105.7% | +125.7% | |
| Mar 4, 2025 | MIRM | $46 | $2.6K | — | −7.1% | −1.3% | +64.0% | +105.7% | +125.7% | |
| Sep 18, 2024 | MIRM | $37 | $4.3K | +0.1% | +4.1% | +7.1% | +16.9% | +98.7% | +169.2% | |
| Sep 16, 2024 | MBX | $16 | $10M | +16% | +11.7% | −11.6% | −59.1% | −55.0% | +92.1% | |
| Sep 6, 2024 | MIRM | $42 | $9.6K | +0.1% | −5.8% | +8.6% | +5.6% | +88.2% | +148.2% | |
| Mar 4, 2024 | ARQT | $10 | $200K | +0.2% | −1.8% | −28.0% | −4.5% | +22.4% | +139.5% | |
| Nov 9, 2023 | MIRM | $28 | $82.4K | +1.8% | +13.3% | −1.8% | −9.3% | +46.1% | +258.3% | |
| Oct 24, 2023 | ARQT | $3 | $200K | +0.9% | −15.1% | +90.8% | +266.1% | +251.9% | +997.1% | |
| Sep 13, 2023 | MIRM | $31 | $81.4K | +1.7% | −6.1% | +13.2% | −7.3% | +37.2% | +240.6% | |
| Sep 12, 2023 | MIRM | $31 | $114.8K | +2.5% | −9.7% | +8.3% | −11.5% | +32.4% | +228.5% | |
| Sep 11, 2023 | MIRM | $30 | $142K | +3.2% | −5.4% | +6.1% | −11.5% | +37.7% | +235.3% | |
| Aug 31, 2023 | MIRM | $26 | $3.88M | NEW | +10.9% | +21.1% | +8.5% | +56.3% | +286.1% | |
| Aug 5, 2022 | ARQT | $20 | $5M | +3.0% | −16.2% | −26.4% | −34.3% | −61.9% | +4.3% |
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 32 scored trades, treat this as a small sample, not a verdict.
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Open-market buys
$41.5M
33 trades
Open-market sells
$0
0 trades
Net flow
+$41.5M
Net buying
Total filings
44
transactions shown
Full transaction history
All Form 4 activity across every company, newest firstMIRM
Heron Patrick J, MIRM's Director, spent $9.6K of their own money on 230 shares at $42.
+$9.6K
230 sh @ $42
ARQT
+$0
10,139 sh
HLVX
Frazier Life Sciences X, L.p., HLVX's 10% owner, spent $128.3K of their own money on 8,850 shares at $15.
+$128.3K
8,850 sh @ $15
ARQT
Heron Patrick J, ARQT's Director, spent $200K of their own money on 21,052 shares at $10.
+$200K
21,052 sh @ $10
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MIRM
Heron Patrick J, MIRM's Director, spent $82.4K of their own money on 2,910 shares at $28, growing their stake 2%.
+$82.4K
2,910 sh @ $28
ARQT
Frazier Life Sciences Viii, L.p., ARQT's 10% owner, spent $200K of their own money on 80,000 shares at $3, growing their stake 1%.
+$200K
80,000 sh @ $3
MIRM
Heron Patrick J, MIRM's Director, spent $81.4K of their own money on 2,625 shares at $31, growing their stake 2%.
+$81.4K
2,625 sh @ $31
MIRM
Heron Patrick J, MIRM's Director, spent $114.8K of their own money on 3,750 shares at $31, growing their stake 2%.
+$114.8K
3,750 sh @ $31
MIRM
Heron Patrick J, MIRM's Director, spent $142K of their own money on 4,687 shares at $30, growing their stake 3%.
+$142K
4,687 sh @ $30
MIRM
Heron Patrick J, MIRM's 10% owner, spent $3.88M of their own money on 147,991 shares at $26, opening a brand-new position.
+$3.88M
147,991 sh @ $26
ARQT
+$0
4,375 sh
ARQT
Frazier Life Sciences Viii, L.p., ARQT's 10% owner, spent $5M of their own money on 250,000 shares at $20, growing their stake 3%.
+$5M
250,000 sh @ $20
ARQT
+$0
4,312 sh
Frequently asked questions
How is Heron Patrick J'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 Heron Patrick J'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.