ATEC Alphatec Holdings, Inc. Insider Trading

Director Valentine Keith buys 135k shares across three open-market purchases as stock trades well below 52-week high.

Valentine Keith, a board director at Alphatec Holdings, made three open-market purchases totaling 135,000 shares between May 7 and May 11, 2026, as the stock traded significantly below its 52-week high. This represents Keith's second wave of open-market buying in the past two years—he also purchased shares in August 2024, which subsequently climbed modestly over both the near and longer term, a track record of well-timed entry points. The timing of these buys is notable: they occur while the company carries substantial operating losses and declining revenue, and the stock has fallen sharply from its 52-week peak and nearly reached its 52-week low. A director purchasing in this environment—when fundamentals remain challenged and the stock is in a pronounced drawdown—suggests Keith sees value at current price levels, particularly given his prior success identifying buy points in this same stock.

COO Lish Scott sells 260.5K shares at $12.30; stock down -42.5% from 52-week high, post-sale holdings decline 24.2%

Lish Scott, Chief Operating Officer, sold 260,535 shares of ATEC at $12.30 on 2026-03-13, reducing his holdings by 24.2% from 1.08M to 815.7K shares. The sale occurred as the stock trades at $13.05, down -42.5% from its 52-week high of $22.68 and down -33.3% over the past 90 days. Notably, Scott's prior four sales at ATEC have had an unfavorable timing pattern: three of those sales were followed by 90-day gains of 28.6%, 35.6%, and 30.3% respectively, meaning he sold before subsequent rallies. The company itself remains unprofitable with a net loss of $28.6M despite $196.5M in quarterly revenue, and annual growth of 25.0%, raising questions about the path to profitability. The magnitude of this insider reduction—nearly one-quarter of his holdings—combined with the company's loss position and the historical pattern of his sales preceding rallies, warrants investor attention to whether fundamentals have deteriorated further.

EVP Hunsaker sells 82,765 shares of ATEC at $12.45; post-sale holdings: 1,725,609 shares (10b5-1 scheduled plan)

Hunsaker sold 82,765 shares under a 10b5-1 trading plan adopted on 2025-03-05, meaning the transaction was pre-arranged and scheduled rather than discretionary. The sale reduced his holdings by 4.6% to 1,725,609 shares, though he retains substantial equity in the company. Because this is a scheduled trade plan, timing interpretation is not applicable—the execution reflects contractual obligations established months prior, not a signal of current conviction or concern about the stock's near-term direction.

ATEC CEO Miles Patrick sold 100,000 shares at $21.01 on 2026-01-05, retaining 5.14M shares; stock up 55.4% in 90 days but unprofitable.

Miles Patrick sold 100,000 shares (-1.9% vs pre-transaction holdings) at $21.01 on 2026-01-05, reducing his stake to 5.14M shares. The stock has appreciated 55.4% over 90 days and currently trades at $21.79, near its 52-week high of $22.59. However, his prior five sales at ATEC showed no well-timed exit pattern (0 of 3 measurable 90-day outcomes were negative), and his cross-ticker track record shows only a 23.08% well-timed rate on 15 prior sells. Fundamentally, the company posted negative net income of $-28.6M against $196.5M in latest-quarter revenue, though it achieved +26.8% annual revenue growth. The sale occurs amid strong near-term momentum but persistent unprofitability, without clear signal alignment to company or market inflection points.

Director Pelizzon sells 250,000 ATEC shares at $19.66; fourth consecutive sale in 8 days as stock rebounds +27.9% in 90 days.

Director David R Pelizzon sold 250,000 shares (250.0K shares) of Alphatec Holdings on 2025-12-16 at $19.66, reducing his holdings from 10,645,045 shares (10.65M shares) to 10,395,045 shares (10.40M shares), a -2.3% reduction. This sale is the fourth consecutive insider sell at ATEC in eight days (following sales on 2025-12-09, 2025-12-08, and 2025-11-24), occurring as the stock has posted a +27.9% 90-day return and trades -12.0% from its 52-week high of $22.59. The company generated $196,503,000.00 in quarterly revenue with +26.8% annual revenue growth but remains unprofitable with a $-28,578,000.00 net loss over the most recent fiscal year. The timing pattern of repeated sales into strength (the stock up significantly over three months) and against the company's ongoing unprofitability raises questions about insider confidence in the current valuation after the sustained rally.

Squadron Capital (10% owner) sells 250,000 ATEC shares for $5.3M at $21.18 avg; retains 10.65M shares

Squadron Capital executed 2 separate sales totaling 250,000 shares for $5,295,098.22, reducing its stake from 10.90M to 10.65M shares (-2.3%) while maintaining a significant 10.65% ownership position. The sales occurred at an average price of $21.18, modestly above the current price of $20.90 and well within the 52-week range of $8.82–$22.59. The company remains unprofitable (net income of $-28.6M in the latest quarter) despite strong annual revenue growth of 26.8%, creating a mixed fundamental backdrop. The seller's track record offers limited insight—Squadron Capital has only 2 prior open-market sells across all tickers, and the timing outcomes of prior transactions at ATEC are not yet measurable, leaving no established pattern to contextualize this disposition.

Director Pelizzon sold 250,000 ATEC shares for $5.3M at avg $21.18; price now $20.90, near 52-week highs.

Director David R Pelizzon executed 2 separate sales totaling 250,000 shares for $5,295,098.22 between December 8-9, 2025, at an average price of $21.18—within 1.3% of the 52-week high of $22.59. The stock has appreciated 33.7% over 90 days and 3.3% over 30 days, indicating strong recent momentum at the time of sale. Pelizzon's prior trades at ATEC show a 2-for-2 pattern of well-timed execution on the 90-day outcome basis: his August 2024 purchases generated +73.3% and +75.1% returns, and his prior November 2025 sales occurred well ahead of measurable results. His cross-ticker track record demonstrates a 100% win rate on buys with average 90-day returns of +74.2%. Post-sale, Pelizzon retains 10.65M shares, representing a 2.3% reduction from prior holdings. The company remains unprofitable on a full-year basis despite 26.8% annual revenue growth, creating a backdrop of operational volatility against which the timing of this director-level liquidation merits monitoring.

Pritzker (10% owner, ATEC) sold 250,000 shares for $5.3M at $21.18 avg on 2025-12-08 to 2025-12-09

Jennifer N. Pritzker executed two separate sales totaling 250,000 shares for $5.3M ($5,295,098.22) at a blended average price of $21.18, reducing her holdings from 10.90M to 10.65M shares (-2.3%). The transaction occurred near the 52-week high ($22.59), with the current price at $20.90 reflecting a -7.5% decline from peak. At ATEC specifically, Pritzker executed two earlier sells in late November 2025 (outcomes not yet measurable) and three buys in August 2023 that posted -29.3% to -29.5% 90-day returns; across her cross-ticker open-market history (8 prior buys, 2 prior sells), her buy timing has been poor (90d win rate 12.50%, avg 90d return -15.3%), though the relevance of timing characterization to this particular filing depends on whether it is structured trading plan activity. The company remains unprofitable (net income $-28.6M in the latest quarter) despite strong 26.8% annual revenue growth, creating a context of elevated valuation uncertainty for an unprofitable growth-stage business.

10% Owner Squadron Capital sells 250,000 shares (2.3% of holdings) at $21.18 average; stock near 52-week highs.

Squadron Capital Holdings LLC, a 10% owner of Alphatec, executed 2 separate sales on consecutive trading days—221,166 shares at $21.20 on 2025-12-08 and 28,834 shares at $21.03 on 2025-12-09—totaling 250,000 shares for $5,295,098.22 at a blended average price of $21.18. The sales reduced holdings from 10.90M to 10.65M shares (-2.3%). The transaction prices of $21.20 and $21.03 are near the 52-week high of $22.59, and modestly above the current price of $20.90. While Alphatec exhibits strong short-term momentum (90-day return +33.7%) and solid revenue growth (+26.8% year-over-year), the company remains unprofitable with a full-year net income of -$28.6M against quarterly revenue of $196.5M. Squadron's prior trades at this ticker show no yet-measurable outcomes, and the insider's cross-ticker track record spans only 2 prior sells without documented timing data at the 90-day mark.

CEO Miles Patrick sells 100.0K ATEC shares at $22.11; stock at $21.23 after +10.1% in 30 days, +28.3% in 90 days.

Miles Patrick (CEO) sold 100,000 shares (100.0K shares) of Alphatec Holdings at $22.11 on 2025-12-01, reducing his holdings from 5,364,078 to 5,264,078 shares—a 1.9% reduction in his position. The sale occurred near the 52-week high ($22.59), with the stock subsequently declining to $21.23 (current). Over his cross-ticker track record, his 14 prior sells have averaged -5.8% 30-day returns and +9.3% 90-day returns, with only 25.00% well-timed at the 90-day horizon—indicating a pattern of selling before rallies rather than before declines. At ATEC specifically, his prior 5 trades show mixed outcomes: two recent sells (Nov and Oct 2025) achieved 30-day gains of +12.0% and +36.0%, though long-term measurability is incomplete, while earlier sells in Sep and Feb saw 90-day gains of +39.6% and +1.8%, suggesting the stock has tended to rise after his sales. Alphatec remains unprofitable (net income $-28.6M in the latest period) despite strong revenue growth of +26.8% annually, which provides context for the company's fundamentals but does not clarify the specific motivation for this sale.