undamentalytics Newsletter

Alphatec Holdings, Inc. insider trading

Every open-market purchase and sale by Alphatec Holdings, Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.
Alphatec Holdings, Inc. insider open-market trades
DateInsiderTrade SharesPriceValue 1M after 3M after 6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Alphatec Holdings, Inc.’s insiders pay?

From April 12, 2010 to September 10, 2026, 40 insiders reported 75 open-market purchases and 50 sales not made under a pre-set plan in Alphatec Holdings, Inc. Twelve months after each purchase was reported, the shares were +18.1% against the S&P 500 on average (median +2.0%), over 38 purchases with a full year of prices; 53% beat the index. After sales, the shares moved −6.3% against the index over 12 months (a negative figure means selling was the right call). Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on March 4, 2021 into $10,128 by November 2, 2026, +0.2% a year. It held shares 88% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $19,342 (+12.4% a year), and held throughout $21,681 (+14.7%).

$0$10.0k$20.0k 202120222023202420252026 $21.7k$19.3k$10.1k
Copying Alphatec Holdings, Inc.'s insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Alphatec Holdings, Inc.'s insiders from March 4, 2021, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 88% of the time.
Alphatec Holdings, Inc.: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Pritzker Jennifer N. 10% owner 13 −11.0% (13) 39% 0 — August 10, 2023
Cross Leslie H Chairman and CEO 12 — — 0 — December 20, 2016
Pelizzon David R Director 7 −6.5% (7) 29% 4 — December 18, 2025
Tullis James L L Director 1 +121.6% (1) 100% 9 0.0% (8) September 13, 2023
Asai Mitsuo President, Alphatec Pacific 6 — — 0 — August 11, 2015
Segal Paul Director 3 +77.7% (3) 100% 3 −55.3% (3) June 14, 2023
Hunsaker Craig E EVP, PEOPLE & CULTURE 1 −1.2% (1) 0% 4 +95.1% (3) December 12, 2025
Lish Scott CHIEF OPERATING OFFICER 0 — — 5 −69.1% (2) March 17, 2026
Bakst Evan Director 4 +34.4% (3) 67% 0 — August 26, 2024
Berkowitz Mortimer III Director 1 +112.7% (1) 100% 3 −56.6% (2) September 11, 2025
Demski David M Director 3 +73.3% (3) 67% 1 — December 12, 2025
Miles Patrick CEO 3 −1.2% (1) 0% 1 +91.0% (1) September 10, 2026
Sponsel David EVP, SALES 1 — — 3 −24.6% (2) December 10, 2025
Foster John 10% owner 0 — — 3 −69.1% (2) December 1, 2016
Mowry David H Director 0 — — 3 +5.1% (3) September 13, 2023
Corbett James President and CEO 2 — — 0 — August 12, 2015
Hochberg Jason Director 2 +4.8% (2) 100% 0 — December 16, 2021
Kuyper Dirk President and CEO 2 — — 0 — September 12, 2011
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. 0 — — 2 −5.9% (1) November 21, 2025
Rydin Jeffrey P Director 0 — — 2 +62.2% (1) November 5, 2025
Valentine Keith Director 2 +107.1% (1) 100% 0 — May 11, 2026
Altman Elizabeth Ann Director 0 — — 1 +60.3% (1) August 17, 2022
Black Jeffrey G. EVP & CFO 0 — — 1 +82.8% (1) August 13, 2020
Blackford Quentin S. Director 1 −38.8% (1) 0% 0 — March 8, 2024
Healthpointcapital Partners II L P and related entities 10% owner 0 — — 1 — November 30, 2012
Healthpointcapital Partners LP Director 0 — — 1 −66.6% (1) April 22, 2010
Hgp LLC Director 0 — — 1 −66.6% (1) April 22, 2010
Hochschuler Stephen Director 1 — — 0 — September 21, 2010
Howell Kelli Mari EVP, Clinical Strategies 1 — — 0 — March 12, 2019
Koning John Todd Chief Financial Officer 1 +10.4% (1) 100% 0 — December 20, 2021
Lubischer Stephen VP, Sales 0 — — 1 −61.5% (1) April 12, 2010
Molson R Ian Director 0 — — 1 — March 7, 2011
O'neill Michael CFO and Vice President 1 — — 0 — August 11, 2011
Oneil Stephen Director 1 — — 0 — August 27, 2010
Plunkett Michael Joseph Chief Operating Officer 1 — — 0 — August 20, 2015
Rich Terry M. Chief Executive Officer 1 — — 0 — December 19, 2016
Ryan William Patrick Chief Operating Officer 1 — — 0 — August 31, 2011
Snider Brian EVP, Strat. Mktg. & Prod. Dev. 1 — — 0 — March 12, 2020
Timm Jens Peter VP, Research and Development 1 — — 0 — September 21, 2010
Wulff Peter C CFO, VP and Treasurer 1 — — 0 — August 12, 2010

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded Alphatec Holdings, Inc.

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Alphatec Holdings, Inc. in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After the 6 buying crowds with six months of prices, it averaged −3.4% against the index. After 3 selling crowds, −26.7%. One company's history is too short to judge by; the test across every company is the better guide.

MonthCrowd3 months on, vs S&P 5006 months12 months
November 28, 20256 selling−42.1%−78.6%not yet
August 30, 20244 buying+44.7%+61.7%+123.3%
March 28, 20242 buying−28.6%−69.6%−35.5%
March 31, 20232 buying+4.0%−24.5%−42.2%
September 30, 20223 selling+33.7%+64.8%+15.5%
July 29, 20224 buying+40.7%+70.9%+123.3%
November 30, 20215 buying+5.9%−26.8%+1.6%
March 31, 20212 buying−11.3%−32.0%−44.7%
April 30, 20105 selling−29.9%−66.4%−69.5%

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Total returns from the month end; past patterns are not a forecast.

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