Alphatec Holdings (ATEC) stock: insider trades, news & valuation
Health Care · Net sellingShare price and insider trades
Alphatec Holdings insider trading at a glance (Oct 9, 2026): in the past 12 months, 2 insiders bought $2.0M and 13 sold $95.8M of ATEC stock on the open market.
Get emailed when insiders cluster-buy stocks like ATEC
Free alerts the day a new cluster buy is filed, plus the Monday report of the week's biggest insider trades.
Free · unsubscribe anytime · not investment advice · see a sample issue
ATEC insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $1.0M | 1 | $79K | 1 |
| Q2 2026 | $996K | 3 | $48K | 1 |
| Q1 2026 | — | 0 | $12.3M | 9 |
| Q4 2025 | — | 0 | $84.8M | 33 |
Valuation, profit and volume
Pick score 39/100Summary
Over the past 12 months, 2 Alphatec Holdings, Inc. insiders reported open-market purchases totaling $2.0M, while 13 insiders reported sales totaling $95.8M. 19 of 44 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ATEC earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Aug 4, 2026 | +18.9% | None | -5.7%S&P +1.6% | -1.3% |
| May 5, 2026 | -6.9% | None | -32.3%S&P +2.2% | +14.4% |
| Feb 24, 2026 | -4.8% | Sold $1.4M | +6.7%S&P +1.6% | -22.2% |
| Jan 12, 2026 | +9.1% | Sold $7.4M | -27.4%S&P -0.0% | -20.4% |
| Oct 30, 2025 | +19.4% | Sold $2.5M | +15.2%S&P -0.8% | +18.7% |
| Jul 31, 2025 | +0.2% | None | +28.3%S&P -2.0% | +15.5% |
| May 1, 2025 | +10.8% | None | +9.3%S&P +2.2% | +3.6% |
| Feb 26, 2025 | -2.7% | None | +14.8%S&P -1.5% | -15.9% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
ATEC stock news and SEC filings
Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.
- 8-K Earnings release
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 10SEC | Patrick MilesCEO | Buy | 115,0005,893,551 held (+2%) | $8.81 | $1.0M | +21.1% | — |
| Aug 7SEC | Tyson Eliot MarshallGeneral Counsel | Sell Plan | 8,168630,398 held (−1%) | $9.65 | $79K | +10.6% | — |
| Jun 12SEC | Karen K McginnisDirector | Sell Plan | 6,05094,671 held (−6%) | $8.01 | $48K | +33.2% | — |
| May 11SEC | Keith ValentineDirector | Buy | 56,153153,424 held (+58%) | $7.49 | $421K | +42.5% | — |
| May 11SEC | Keith ValentineDirector | Buy | 43,847197,271 held (+29%) | $7.54 | $331K | +41.5% | — |
| May 11SEC | Keith ValentineDirector | Buy | 35,000232,271 held (+18%) | $7.00 | $245K | +52.4% | — |
| Mar 17SEC | Scott LishCOO | Sell | 260,535815,704 held (−24%) | $12.30 | $3.2M | -13.3% | — |
| Mar 17SEC | John Todd KoningCFO | Sell Plan | 79,789600,721 held (−12%) | $12.36 | $986K | -13.7% | — |
| Mar 13SEC | David SponselEvp, Sales | Sell Plan | 163,452504,932 held (−24%) | $12.52 | $2.0M | -14.8% | — |
| Mar 10SEC | Craig E HunsakerEvp, People & Culture | Sell Plan | 82,7651,726,209 held (−5%) | $12.45 | $1.0M | -14.3% | — |
| Mar 10SEC | Craig E HunsakerEvp, People & Culture | Sell Plan | 33,6021,808,974 held (−2%) | $12.22 | $411K | -12.7% | — |
| Mar 9SEC | Tyson Eliot MarshallGeneral Counsel | Sell Plan | 88,835559,459 held (−14%) | $12.49 | $1.1M | -14.6% | — |
| Feb 6SEC | David SponselEvp, Sales | Sell Plan | 60,425349,500 held (−15%) | $13.79 | $833K | -22.6% | — |
| Feb 4SEC | Craig E HunsakerEvp, People & Culture | Sell Plan | 37,3581,173,025 held (−3%) | $14.71 | $550K | -27.5% | — |
| Jan 6SEC | Patrick MilesCEO | Sell Plan | 100,0005,135,398 held (−2%) | $21.01 | $2.1M | -49.2% | — |
| Dec 18SEC | David R PelizzonDirector | Sell | 250,00010,395,045 held (−2%) | $19.66 | $4.9M | -45.7% | — |
| Dec 18SEC | Scott LishCOO | Sell Plan | 19,900641,432 held (−3%) | $19.64 | $391K | -45.7% | — |
| Dec 12SEC | Craig E HunsakerEvp, People & Culture | Sell | 32,5841,256,558 held (−3%) | $20.84 | $679K | -48.8% | — |
| Dec 12SEC | David M DemskiDirector | Sell | 30,000399,623 held (−7%) | $21.20 | $636K | -49.7% | — |
| Dec 12SEC | David SponselEvp, Sales | Sell Plan | 21,106439,767 held (−5%) | $20.79 | $439K | -48.7% | — |
| Dec 10SEC | David R PelizzonDirector | Sell | 221,16610,673,879 held (−2%) | $21.20 | $4.7M | -49.7% | — |
| Dec 10SEC | Squadron Capital Llc10% Owner | Sell | 221,16610,673,879 held (−2%) | $21.20 | $4.7M | -49.7% | — |
| Dec 10SEC | Jennifer N. Pritzker10% Owner | Sell | 221,16610,673,879 held (−2%) | $21.20 | $4.7M | -49.7% | — |
| Dec 10SEC | Squadron Capital Holdings Llc10% Owner | Sell | 221,16610,673,879 held (−2%) | $21.20 | $4.7M | -49.7% | — |
| Dec 10SEC | David R PelizzonDirector | Sell | 28,83410,645,045 held (−0%) | $21.03 | $606K | -49.3% | — |
| Dec 10SEC | Squadron Capital Llc10% Owner | Sell | 28,83410,645,045 held (−0%) | $21.03 | $606K | -49.3% | — |
| Dec 10SEC | Jennifer N. Pritzker10% Owner | Sell | 28,83410,645,045 held (−0%) | $21.03 | $606K | -49.3% | — |
| Dec 10SEC | Squadron Capital Holdings Llc10% Owner | Sell | 28,83410,645,045 held (−0%) | $21.03 | $606K | -49.3% | — |
| Dec 10SEC | David SponselEvp, Sales | Sell | 988460,873 held (−0%) | $21.45 | $21K | -50.3% | — |
| Dec 9SEC | Tyson Eliot MarshallGeneral Counsel | Sell Plan | 12,965345,442 held (−4%) | $21.47 | $278K | -50.3% | — |
| Dec 9SEC | Scott LishCOO | Sell | 10,875661,332 held (−2%) | $21.47 | $233K | -50.3% | — |
| Dec 9SEC | Tyson Eliot MarshallGeneral Counsel | Sell Plan | 9,924358,407 held (−3%) | $21.48 | $213K | -50.3% | — |
| Dec 3SEC | Patrick MilesCEO | Sell Plan | 100,0005,264,078 held (−2%) | $22.11 | $2.2M | -51.7% | — |
| Nov 26SEC | Squadron Capital Holdings Llc10% Owner | Sell | 250,00010,895,045 held (−2%) | $20.62 | $5.2M | -48.3% | — |
| Nov 26SEC | Jennifer N. Pritzker10% Owner | Sell | 250,00010,895,045 held (−2%) | $20.62 | $5.2M | -48.3% | — |
| Nov 25SEC | David R PelizzonDirector | Sell | 250,00010,895,045 held (−2%) | $20.62 | $5.2M | -48.3% | — |
| Nov 25SEC | Squadron Capital Llc10% Owner | Sell | 250,00010,895,045 held (−2%) | $20.62 | $5.2M | -48.3% | — |
| Nov 21SEC | Tyson Eliot MarshallGeneral Counsel | Sell | 70,000368,331 held (−16%) | $19.51 | $1.4M | -45.3% | — |
| Nov 21SEC | Scott LishCOO | Sell | 25,000672,207 held (−4%) | $19.80 | $495K | -46.1% | — |
| Nov 14SEC | Jennifer N. Pritzker10% Owner | Sell | 250,00011,145,045 held (−2%) | $20.80 | $5.2M | -48.7% | — |
| Nov 14SEC | David R PelizzonDirector | Sell | 250,00011,145,045 held (−2%) | $20.80 | $5.2M | -48.7% | — |
| Nov 14SEC | Squadron Capital Holdings Llc10% Owner | Sell | 250,00011,145,045 held (−2%) | $20.80 | $5.2M | -48.7% | — |
| Nov 14SEC | Squadron Capital Llc10% Owner | Sell | 250,00011,145,045 held (−2%) | $20.80 | $5.2M | -48.7% | — |
| Nov 5SEC | Jeffrey P RydinDirector | Sell | 200,000385,441 held (−34%) | $19.32 | $3.9M | -44.8% | — |
| Nov 5SEC | Patrick MilesCEO | Sell Plan | 100,0005,364,078 held (−2%) | $18.96 | $1.9M | -43.7% | — |
| Oct 31SEC | Craig E HunsakerEvp, People & Culture | Sell Plan | 100,0001,289,142 held (−7%) | $19.95 | $2.0M | -46.5% | — |
| Oct 28SEC | David SponselEvp, Sales | Sell Plan | 70,000461,861 held (−13%) | $16.18 | $1.1M | -34.1% | — |
| Oct 3SEC | Patrick MilesCEO | Sell Plan | 100,0005,464,078 held (−2%) | $13.96 | $1.4M | -23.6% | — |
Insiders at Alphatec Holdings, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| David R PelizzonDirector | — | $20.6M | Dec 18, 2025 | — |
| Squadron Capital Llc10% Owner | — | $15.7M | Dec 10, 2025 | — |
| Jennifer N. Pritzker10% Owner | — | $15.7M | Dec 10, 2025 | — |
| Squadron Capital Holdings Llc10% Owner | — | $15.7M | Dec 10, 2025 | — |
| Patrick MilesCEO | $1.0M | $7.6M | Sep 10, 2026 | — |
| Craig E HunsakerEvp, People & Culture | — | $4.7M | Mar 10, 2026 | — |
| David SponselEvp, Sales | — | $4.5M | Mar 13, 2026 | — |
| Scott LishCOO | — | $4.3M | Mar 17, 2026 | — |
| Jeffrey P RydinDirector | — | $3.9M | Nov 5, 2025 | — |
| Tyson Eliot MarshallGeneral Counsel | — | $3.0M | Aug 7, 2026 | — |
| Keith ValentineDirector | $996K | — | May 11, 2026 | — |
| John Todd KoningCFO | — | $986K | Mar 17, 2026 | — |
| David M DemskiDirector | — | $636K | Dec 12, 2025 | — |
| Karen K McginnisDirector | — | $48K | Jun 12, 2026 | — |
Insider activity at other Health Care companies
Same sector, ranked by insider buying in the last 90 days.
ATEC stock: common questions
Are Alphatec Holdings, Inc. insiders buying ATEC stock?
In the past 12 months, 2 insiders reported open-market purchases of ATEC worth $2.0M. The latest was CEO Patrick Miles bought $1.0M of ATEC at $8.81 — first open-market purchase in our records.
Are Alphatec Holdings, Inc. insiders selling ATEC stock?
13 insiders reported sales worth $95.8M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ATEC's 52-week range?
Over the past year ATEC has traded between $6.99 and $22.68. It last closed at $10.67 on Oct 9, 2026.