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Buy ATEC
Alphatec Holdings Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -82.66. In total, the insiders bought 4.35M and sold 5.36M ATEC shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-82.66 |
| ● Buy | 4.35M shares |
| ● Sell | 5.36M shares |
|
51% Buy Activity
Moderate Negative Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jun 11, 2026 Sell |
Mcginnis Karen K Director |
6 050 Value: $48.5K |
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|
Jun 10, 2026 Buy |
Blackford Quentin S. Director |
32 012 Value: $260.3K |
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Jun 10, 2026 Buy |
Mcginnis Karen K Director |
32 012 Value: $260.3K |
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Jun 10, 2026 Buy |
Valentine Keith Director |
32 012 Value: $260.3K |
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|
Jun 10, 2026 Buy |
Berkowitz Mortimer Iii Director |
32 012 Value: $260.3K |
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Jun 10, 2026 Buy |
Pelizzon David R Director |
32 012 Value: $260.3K |
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Jun 10, 2026 Buy |
Demski David M Director |
32 012 Value: $260.3K |
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May 11, 2026 Buy |
Valentine Keith Director |
35 000 Value: $245.0K |
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|
May 08, 2026 Buy |
Valentine Keith Director |
43 847 Value: $330.6K |
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May 07, 2026 Buy |
Valentine Keith Director |
56 153 Value: $420.6K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
12 500 Value: $41.8K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
15 000 Value: $29.7K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
15 000 Value: $29.7K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
12 500 Value: $41.8K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
60 000 Value: $161.4K |
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Apr 07, 2026 Sell |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
23 393 Value: $258.0K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
15 000 Value: $25.2K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
60 000 Value: $161.4K |
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Apr 07, 2026 Buy |
Marshall Tyson Eliot General Counsel & Corp. Sec. |
15 000 Value: $25.2K |
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|
Mar 13, 2026 Sell |
Koning John Todd Chief Financial Officer |
79 789 Value: $986.2K |
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Mar 13, 2026 Sell |
Lish Scott Chief Operating Officer |
260 535 Value: $3.20M |
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Mar 11, 2026 Sell |
Sponsel David EVP, Sales |
163 452 Value: $2.05M |
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Mar 09, 2026 Sell |
Hunsaker Craig E EVP, People & Culture |
82 765 Value: $1.03M |
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Mar 09, 2026 Sell |
Hunsaker Craig E EVP, People & Culture |
600 Value: $0 |
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Mar 06, 2026 Sell |
Hunsaker Craig E EVP, People & Culture |
33 602 Value: $410.6K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
