MarketPeel
Insider Trading Intelligence
KM

Karen K. Mcginnis

ATEC
DIRECTOR · ALPHATEC HOLDINGS, INC. · CIK 0001188264
FILING MIX · LIFETIME63%/37%
BUYS
24
SELLS
14
TOTAL VALUE
$2.42M
COMPANIES
4
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
139,617
AVG SELL PX
$41.33
TRADE KIND
SHOWING 38 / 38
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
8 backtested trades · 8 horizons · 2 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Karen K. Mcginnis, 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+50.00%-0.70%-0.06%-0.63%-1.26%
14d8+75.00%-0.19%+0.53%-0.72%-3.67%
30d8+62.50%-3.35%+1.49%-4.85%-8.98%
60d8+50.00%-0.96%+4.03%-4.99%-3.70%
90d8+37.50%+5.63%+7.06%-1.43%-10.58%
180d8+0.00%+16.17%+13.50%+2.67%+4.02%
1y8+37.50%-7.84%+20.60%-28.44%-25.67%
2y8(2 pending)+83.33%-47.84%+13.55%-61.38%-62.57%
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
ATEC · 94,671 shares · as of Jun 11, 2026
025,18050,36175,541100,721202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
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 · 24 buys / 14 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
6,050$8.01$48.5K94,671Jun 11, 2026Jun 12, 2026View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
32,012100,721Jun 10, 2026Jun 12, 2026View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
39,80039,800Jun 4, 2026Jun 11, 2026View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
10,10048,420Jun 4, 2026Jun 11, 2026View →
IRTC
IRHYTHM HOLDINGS, INC.
PURCHASEGRANT
Stock grant
1,5733,608May 27, 2026May 29, 2026View →
IRTC
IRHYTHM HOLDINGS, INC.
PURCHASEGRANT
Stock grant
2,0352,035Jul 7, 2025Jul 8, 2025View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
3,963$12.11$48.0K68,709Jun 11, 2025Jun 13, 2025View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
57,40057,400Jun 11, 2025Jun 12, 2025View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
14,50038,320Jun 11, 2025Jun 12, 2025View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
15,13172,672Jun 11, 2025Jun 13, 2025View →
ATEC
ALPHATEC HOLDINGS, INC.
SALE10b5-1
10b5-1 plan
38,320$12.26$469.8K57,541Mar 3, 2025Mar 4, 2025View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
8,82023,820Jun 12, 2024Jun 14, 2024View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
16,74795,861Jun 12, 2024Jun 14, 2024View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
36,27436,274Jun 12, 2024Jun 14, 2024View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
9,90879,114Jun 20, 2023Jun 21, 2023View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
53,10053,100Jun 14, 2023Jun 16, 2023View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
18,54669,206Jun 15, 2022Jun 16, 2022View →
ABSI
ABSCI CORP
PURCHASEGRANT
Stock grant
28,70028,700Jun 8, 2022Jun 10, 2022View →
ABSI
ABSCI CORP
PURCHASE
15,000$16.00$240.0K15,000Jul 26, 2021Jul 28, 2021View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
10,22150,660Jun 16, 2021Jun 18, 2021View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
666$486.75$324.2K1,538Feb 18, 2021Feb 22, 2021View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
9350Feb 17, 2021Feb 18, 2021View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
372$494.24$183.9K2,204Feb 17, 2021Feb 18, 2021View →
ILMN
ILLUMINA, INC.
PURCHASE
VP, Chief Accounting Officer
9352,576Feb 17, 2021Feb 18, 2021View →
ILMN
ILLUMINA, INC.
PURCHASEGRANT
Stock grant
1031,641Feb 17, 2021Feb 18, 2021View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
72$444.84$32.0K1,538Feb 2, 2021Feb 3, 2021View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
218$300.00$65.4K1,538Nov 18, 2020Nov 19, 2020View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
116$296.73$34.4K1,756Nov 14, 2020Nov 17, 2020View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
312$310.10$96.8K1,872Nov 6, 2020Nov 9, 2020View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
166$311.72$51.7K2,184Nov 5, 2020Nov 9, 2020View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
1,856$357.01$662.6K2,350Aug 10, 2020Aug 12, 2020View →
ATEC
ALPHATEC HOLDINGS, INC.
PURCHASEGRANT
Stock grant
23,78440,439Jun 17, 2020Jun 18, 2020View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
536$296.00$158.7K4,206Feb 11, 2020Feb 13, 2020View →
ILMN
ILLUMINA, INC.
PURCHASEGRANT
Stock grant
5013,741Feb 11, 2020Feb 13, 2020View →
ILMN
ILLUMINA, INC.
SALE
VP, Chief Accounting Officer
1,0010Feb 11, 2020Feb 13, 2020View →
ILMN
ILLUMINA, INC.
PURCHASE
VP, Chief Accounting Officer
1,0014,742Feb 11, 2020Feb 13, 2020View →
ILMN
ILLUMINA, INC.
PURCHASEGRANT
Stock grant
999999Feb 5, 2020Feb 7, 2020View →
ILMN
ILLUMINA, INC.
PURCHASEGRANT
Stock grant
9993,240Feb 5, 2020Feb 7, 2020View →
Other insiders · ATEC
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About this filer
CIK 0001188264
ROLE
Director
PRIMARY
ATEC
COMPANIES
4
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001188264DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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