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Stuart Essig

IDXX
DIRECTOR · IDEXX LABORATORIES INC /DE · CIK 0001187574
FILING MIX · LIFETIME80%/20%
BUYS
43
SELLS
11
TOTAL VALUE
$29.55M
COMPANIES
4
ACTIVE SINCE
Oct 2019
HOLDINGS NOW
574,061
AVG SELL PX
$44.57
TRADE KIND
SHOWING 54 / 54
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
6 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Stuart Essig, 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
7d6+50.00%+1.94%+1.62%+0.32%-0.61%—
14d6+50.00%+0.57%+3.37%-2.81%-3.46%—
30d6+83.33%-4.44%+2.94%-7.38%-9.97%—
60d6+83.33%-1.56%+7.57%-9.13%-13.98%—
90d6+66.67%-8.75%+12.83%-21.57%-24.20%—
180d6+0.00%+2.34%+18.68%-16.34%-13.84%—
1y6+16.67%+12.83%+32.37%-19.54%-8.86%—
2y6+16.67%+0.46%+34.71%-34.26%-22.28%—
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
IDXX · 525 shares · as of May 12, 2026
05591,1181,6772,236202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2019
2020
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
FLOW · 43 buys / 11 sellsCOVERAGE · 27 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
705,468——705,468Jun 1, 2026Jun 3, 2026 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
365,297——365,297Jun 1, 2026Jun 3, 2026 ↗View →
PIPR
PIPER SANDLER COMPANIES
PURCHASEGRANT
Stock grant
1,875——2,575May 20, 2026May 21, 2026 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
234——234May 12, 2026May 14, 2026 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
525——525May 12, 2026May 14, 2026 ↗View →
PIPR
PIPER SANDLER COMPANIES
PURCHASEGRANT
Stock grant
175——175Feb 4, 2026Feb 5, 2026 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
SALE
200,000$13.62$2.72M1,152,236Aug 14, 2025Aug 18, 2025 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASE
200,000$13.62$2.72M200,000Aug 14, 2025Aug 18, 2025 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
6,939——647,258May 9, 2025May 13, 2025 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
24,898——672,156May 9, 2025May 13, 2025 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
257——257May 7, 2025May 8, 2025 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
600——600May 7, 2025May 8, 2025 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASE
262——2,236May 6, 2025May 8, 2025 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
SALE
262——0May 6, 2025May 8, 2025 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASE
Exec. Chairman of the Board
52,641$28.49$1.50M487,922May 23, 2024May 24, 2024 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
3,163——924,609May 9, 2024May 13, 2024 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
10,672——935,281May 9, 2024May 13, 2024 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASE
257——1,974May 6, 2024May 8, 2024 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
609——609May 6, 2024May 8, 2024 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
SALE
257——0May 6, 2024May 8, 2024 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
262——262May 6, 2024May 8, 2024 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
645——645May 17, 2023May 19, 2023 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
257——257May 17, 2023May 19, 2023 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
5,505——1,152,329May 12, 2023May 16, 2023 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
SALE
344——0May 11, 2023May 15, 2023 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASE
344——1,717May 11, 2023May 15, 2023 ↗View →
OFIX
ORTHOFIX MEDICAL INC.
PURCHASEGRANT
Stock grant
14,354——205,966Jan 5, 2023Feb 9, 2023 ↗View →
OFIX
ORTHOFIX MEDICAL INC.
PURCHASEGRANT
Stock grant
14,052——205,664Jan 5, 2023Jan 9, 2023 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
4,215——1,146,824May 13, 2022May 17, 2022 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
SALE
224——344May 11, 2022May 13, 2022 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASE
224——1,373May 11, 2022May 13, 2022 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
945——945May 11, 2022May 13, 2022 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
344——568May 11, 2022May 13, 2022 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
49$489.05$24.0K1,149Jan 28, 2022Feb 1, 2022 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
36$666.14$24.0K1,100Oct 29, 2021Nov 2, 2021 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
35$678.53$23.7K1,064Jul 30, 2021Aug 3, 2021 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
3,532——901,621May 14, 2021May 17, 2021 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
723——723May 12, 2021May 14, 2021 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
224——224May 12, 2021May 14, 2021 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
36$548.99$19.8K1,029Apr 30, 2021May 4, 2021 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
SALE
214,553$68.14$14.62M0Mar 18, 2021Mar 22, 2021 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
42$478.68$20.1K993Jan 29, 2021Feb 2, 2021 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
47$424.82$20.0K951Oct 30, 2020Nov 2, 2020 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
42$371.10$15.6K904Jul 30, 2020Aug 3, 2020 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
SALE
11,626$52.40$609.2K923,706May 28, 2020May 28, 2020 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
SALE
89,479$52.13$4.66M935,332May 27, 2020May 28, 2020 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
SALE
46,807$52.08$2.44M1,024,811May 26, 2020May 28, 2020 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
791——1,066,451May 13, 2020May 14, 2020 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
PURCHASEGRANT
Stock grant
5,167——1,071,618May 13, 2020May 14, 2020 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
SALE
2,087$52.07$108.7K1,065,660May 12, 2020May 14, 2020 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
1,279——1,279May 6, 2020May 8, 2020 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
370——1,261May 6, 2020May 8, 2020 ↗View →
IDXX
IDEXX LABORATORIES INC /DE
PURCHASEGRANT
Stock grant
70$283.73$19.9K862Jan 30, 2020Feb 3, 2020 ↗View →
IART
INTEGRA LIFESCIENCES HOLDINGS CORP
SALEGRANT
Gift
214,553——0Oct 11, 2019May 14, 2020 ↗View →
Other insiders · IDXX
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About this filer
CIK 0001187574
ROLE
Director
PRIMARY
IDXX
COMPANIES
4
ACTIVE SINCE
Oct 2019
MARKETPEEL · /INSIDER/0001187574DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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