MarketPeel
Insider Trading Intelligence
BH

Bridgette P. Heller

DXCM
DIRECTOR · DEXCOM INC · CIK 0001485616
FILING MIX · LIFETIME78%/22%
BUYS
35
SELLS
10
TOTAL VALUE
$955.6K
COMPANIES
2
ACTIVE SINCE
May 2020
HOLDINGS NOW
65,391
AVG SELL PX
$90.81
TRADE KIND
SHOWING 45 / 45
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
8 backtested trades · 8 horizons · 7 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Bridgette P. Heller, 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
7d8+25.00%+1.34%-0.14%+1.49%+1.73%
14d8+50.00%-0.54%-0.45%-0.09%-1.49%
30d8+75.00%-2.35%-0.51%-1.85%-0.97%
60d8+37.50%+3.51%+2.34%+1.17%+6.83%
90d8+37.50%+0.12%+4.22%-4.10%+0.24%
180d8+25.00%+7.40%+10.20%-2.80%-0.11%
1y8(2 pending)+66.67%-3.46%+19.36%-22.82%-25.00%
2y8(5 pending)+66.67%-10.77%+32.04%-42.81%-72.70%
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
DXCM · 29,570 shares · as of Aug 12, 2026
07,64615,29122,93730,582202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
FLOW · 35 buys / 10 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
1,012$88.29$89.3K29,570Aug 12, 2026Aug 13, 2026View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
80.10735,821.295Jun 3, 2026Jun 4, 2026View →
DXCM
DEXCOM INC
PURCHASEGRANT
Stock grant
5,57530,582May 28, 2026Jun 1, 2026View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
1,012$60.01$60.7K25,007May 12, 2026May 14, 2026View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
104.135,741.188Mar 4, 2026Mar 5, 2026View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
1,012$68.01$68.8K26,019Feb 12, 2026Feb 17, 2026View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
5,124$38.06$195.0K35,637.088Feb 3, 2026Feb 4, 2026View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
96.68830,513.088Dec 17, 2025Dec 18, 2025View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
1,012$58.07$58.8K27,031Nov 12, 2025Nov 12, 2025View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
79.51530,416.4Aug 20, 2025Aug 21, 2025View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
79.22830,336.885May 28, 2025May 29, 2025View →
DXCM
DEXCOM INC
PURCHASEGRANT
Stock grant
5,04628,043May 8, 2025May 12, 2025View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
352$70.33$24.8K22,997Mar 17, 2025Mar 19, 2025View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
85.23330,257.657Feb 24, 2025Feb 25, 2025View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
5,00030,172.424Jan 24, 2025Jan 27, 2025View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
1,000$76.87$76.9K23,349Dec 16, 2024Dec 17, 2024View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
65.25325,172.424Dec 12, 2024Dec 13, 2024View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
1,000$70.00$70.0K24,349Sep 16, 2024Sep 17, 2024View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
65.53725,107.171Sep 3, 2024Sep 5, 2024View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
1,000$113.55$113.5K25,349Jun 14, 2024Jun 18, 2024View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
74.54125,041.634May 28, 2024May 30, 2024View →
DXCM
DEXCOM INC
PURCHASEGRANT
Stock grant
2,61826,349May 22, 2024May 24, 2024View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
77.19824,967.093Feb 28, 2024Mar 1, 2024View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
5,98524,889.895Jan 30, 2024Feb 1, 2024View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
65.89518,904.895Dec 8, 2023Dec 12, 2023View →
DXCM
DEXCOM INC
SALE10b5-1
10b5-1 plan
600$106.56$63.9K23,731Sep 12, 2023Sep 13, 2023View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
39.61113,583.001Aug 29, 2023Aug 30, 2023View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
37.6313,543.39May 31, 2023Jun 2, 2023View →
DXCM
DEXCOM INC
PURCHASEGRANT
Stock grant
2,911$0.00$324,331May 18, 2023May 22, 2023View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
39.38713,505.76Mar 8, 2023Mar 10, 2023View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
4,15313,466.373Feb 3, 2023Feb 7, 2023View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
24.7049,313.373Dec 5, 2022Dec 7, 2022View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
28.6219,288.669Aug 30, 2022Sep 1, 2022View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
29.8289,260.048Jun 1, 2022Jun 3, 2022View →
DXCM
DEXCOM INC
PURCHASEGRANT
Stock grant
988$0.00$15,355May 20, 2022May 23, 2022View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
27.6359,230.22Mar 2, 2022Mar 4, 2022View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
4,6309,202.585Feb 1, 2022Feb 3, 2022View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
14.2214,572.585Dec 7, 2021Dec 9, 2021View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
14.7434,558.364Sep 8, 2021Sep 9, 2021View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
13.3894,543.621Jun 9, 2021Jun 11, 2021View →
DXCM
DEXCOM INC
PURCHASEGRANT
Stock grant
919$0.00$14,367May 21, 2021May 25, 2021View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
12.2324,530.232Mar 3, 2021Mar 5, 2021View →
ARMK
ARAMARK
PURCHASEGRANT
Stock grant
4,5184,518Feb 2, 2021Feb 4, 2021View →
DXCM
DEXCOM INC
SALE
375$356.65$133.7K3,448Dec 15, 2020Dec 17, 2020View →
DXCM
DEXCOM INC
PURCHASEGRANT
Stock grant
787$0.00$13,823May 22, 2020May 27, 2020View →
Other insiders · DXCM
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About this filer
CIK 0001485616
ROLE
Director
PRIMARY
DXCM
COMPANIES
2
ACTIVE SINCE
May 2020
MARKETPEEL · /INSIDER/0001485616DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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