David Sponsel - Net Worth and Insider Trading
David Sponsel Net Worth
The estimated net worth of David Sponsel is at least $5 Million dollars as of 2026-09-09. David Sponsel is the EVP, SALES of Alphatec Holdings Inc and owns about 504,932 shares of Alphatec Holdings Inc (ATEC) stock worth over $5 Million. Details can be seen in David Sponsel's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that David Sponsel has not made any transactions after 2026-03-11 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of David Sponsel
David Sponsel Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, David Sponsel owns 1 companies in total, including Alphatec Holdings Inc (ATEC) .
Click here to see the complete history of David Sponsel’s form 4 insider trades.
Insider Ownership Summary of David Sponsel
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| ATEC | Alphatec Holdings Inc | 2026-03-11 | EVP & Sales |
David Sponsel Latest Holdings Summary
David Sponsel currently owns a total of 1 stock. David Sponsel owns 504,932 shares of Alphatec Holdings Inc (ATEC) as of March 11, 2026, with a value of $5 Million.
Latest Holdings of David Sponsel
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| ATEC | Alphatec Holdings Inc | 2026-03-11 | 504,932 | 9.11 | 4,599,931 |
Holding Weightings of David Sponsel
David Sponsel Form 4 Trading Tracker
According to the SEC Form 4 filings, David Sponsel has made a total of 23 transactions in Alphatec Holdings Inc (ATEC) over the past 5 years, including 0 buys and 23 sells. The most-recent trade in Alphatec Holdings Inc is the sale of 163,452 shares on March 11, 2026, which brought David Sponsel around $2 Million.
Insider Trading History of David Sponsel
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
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David Sponsel Trading Performance
GuruFocus tracks the stock performance after each of David Sponsel's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by David Sponsel is 7.03%. GuruFocus also compares David Sponsel's trading performance to market benchmark return within the same time period. The performance of stocks bought by David Sponsel within 3 months outperforms 0 times out of 1 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how David Sponsel's insider trading performs compared to the benchmark.
Performance of David Sponsel
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | -10.66 | | | | | |
| Relative Return to S&P 500(%) | -12.43 | | | | | |
David Sponsel Ownership Network
Ownership Network List of David Sponsel
Ownership Network Relation of David Sponsel
David Sponsel Owned Company Details
What does Alphatec Holdings Inc do?
Who are the key executives at Alphatec Holdings Inc?
David Sponsel is the EVP & Sales of Alphatec Holdings Inc. Other key executives at Alphatec Holdings Inc include GENERAL COUNSEL & CORP. SEC. Tyson Eliot Marshall , SVP & Development Scott Lish , and Chief Financial Officer John Todd Koning .
Alphatec Holdings Inc (ATEC) Insider Trades Summary
Over the past 18 months, David Sponsel made 6 insider transaction in Alphatec Holdings Inc (ATEC) with a net sale of 455,971. Other recent insider transactions involving Alphatec Holdings Inc (ATEC) include a net sale of 524,617 shares made by Scott Lish , a net sale of 547,185 shares made by Craig E Hunsaker , and a net sale of 222,362 shares made by Tyson Eliot Marshall .
In summary, during the past 3 months, insiders sold 14,218 shares of Alphatec Holdings Inc (ATEC) in total and bought 0 shares, with a net sale of 14,218 shares. During the past 18 months, 6,285,058 shares of Alphatec Holdings Inc (ATEC) were sold and 135,000 shares were bought by its insiders, resulting in a net sale of 6,150,058 shares.
Alphatec Holdings Inc (ATEC)'s detailed insider trading history can be found in Insider Trading Tracker table.
Alphatec Holdings Inc Insider Transactions
David Sponsel Mailing Address
Above is the net worth, insider trading, and ownership report for David Sponsel. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, David Sponsel's mailing address is: Carlsbad Ca 92008.
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