ATEC Alphatec Holdings, Inc.

NASDAQ
$10.58

Alphatec Holdings, Inc. (ATEC) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with ATEC's own trailing one-year pace, with 20% of sale value under a prearranged plan.
Cluster activity 1 buyer in the last 30 days 1 buyer in the last 90 days 1 seller in the last 90 days
Insiders buying
2
4 transactions
Insiders selling
13
46 transactions
Purchases
$2.0M
250,000 shares
Sales
$99.3M
5,214,321 shares
Net activity
-$97.3M
purchases less sales

How much of that selling was preplanned? 20% planned / 80% discretionary

10b5-1 plan sales $20.0M 19 transactions · 1,241,650 shares
Discretionary sales $79.3M 27 transactions · 3,972,671 shares

Largest single sale: $5.2M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: September 10, 2026 , by Miles Patrick .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Miles Patrick CEO Buy 115,000 $8.81 $1.0M 5,893,551
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. Sell 10b5-1 8,168 $9.65 $78.8K 630,398 −1.3% of holding
MCGINNIS KAREN K Director Sell 10b5-1 6,050 $8.01 $48.5K 94,671 −6% of holding
Valentine Keith Director Buy 35,000 $7.00 $245.0K 232,271
Valentine Keith Director Buy 43,847 $7.54 $330.6K 197,271
Valentine Keith Director Buy 56,153 $7.49 $420.6K 153,424
Lish Scott CHIEF OPERATING OFFICER Sell 260,535 $12.30 $3.2M 815,704 −24.2% of holding
Koning John Todd CHIEF FINANCIAL OFFICER Sell 10b5-1 79,789 $12.36 $986.2K 600,721 −11.7% of holding
Sponsel David EVP, SALES Sell 10b5-1 163,452 $12.52 $2.0M 504,932 −24.5% of holding
Hunsaker Craig E EVP, PEOPLE & CULTURE Sell 82,765 $12.45 $1.0M 1,726,209 −4.6% of holding
Hunsaker Craig E EVP, PEOPLE & CULTURE Sell 10b5-1 33,602 $12.22 $410.6K 1,808,974 −1.8% of holding
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. Sell 10b5-1 88,835 $12.49 $1.1M 559,459 −13.7% of holding
Sponsel David EVP, SALES Sell 10b5-1 60,425 $13.79 $833.3K 349,500 −14.7% of holding
Hunsaker Craig E EVP, PEOPLE & CULTURE Sell 10b5-1 37,358 $14.71 $549.5K 1,173,025 −3.1% of holding
Miles Patrick CEO Sell 10b5-1 100,000 $21.01 $2.1M 5,135,398 −1.9% of holding
Pelizzon David R Director Sell 250,000 $19.66 $4.9M 10,395,045 −2.3% of holding
Lish Scott CHIEF OPERATING OFFICER Sell 10b5-1 19,900 $19.64 $390.8K 641,432 −3% of holding
Demski David M Director Sell 30,000 $21.20 $636.0K 399,623 −7% of holding
Hunsaker Craig E EVP, PEOPLE & CULTURE Sell 32,584 $20.84 $679.1K 1,256,558 −2.5% of holding
Sponsel David EVP, SALES Sell 10b5-1 21,106 $20.79 $438.8K 439,767 −4.6% of holding
Pelizzon David R Director Sell 28,834 $21.03 $606.4K 10,645,045 −0.3% of holding
Squadron Capital LLC 10% Owner Sell 28,834 $21.03 $606.4K 10,645,045 −0.3% of holding
Squadron Capital Holdings LLC 10% Owner Sell 28,834 $21.03 $606.4K 10,645,045 −0.3% of holding
Pritzker Jennifer N. 10% Owner Sell 28,834 $21.03 $606.4K 10,645,045 −0.3% of holding
Pritzker Jennifer N. 10% Owner Sell 221,166 $21.20 $4.7M 10,673,879 −2% of holding
Pelizzon David R Director Sell 221,166 $21.20 $4.7M 10,673,879 −2% of holding
Squadron Capital LLC 10% Owner Sell 221,166 $21.20 $4.7M 10,673,879 −2% of holding
Squadron Capital Holdings LLC 10% Owner Sell 221,166 $21.20 $4.7M 10,673,879 −2% of holding
Sponsel David EVP, SALES Sell 988 $21.45 $21.2K 460,873 −0.2% of holding
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. Sell 10b5-1 12,965 $21.47 $278.4K 345,442 −3.6% of holding
Lish Scott CHIEF OPERATING OFFICER Sell 10,875 $21.47 $233.5K 661,332 −1.6% of holding
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. Sell 9,924 $21.48 $213.2K 358,407 −2.7% of holding
Miles Patrick CEO Sell 10b5-1 100,000 $22.11 $2.2M 5,264,078 −1.9% of holding
Pelizzon David R Director Sell 250,000 $20.62 $5.2M 10,895,045 −2.2% of holding
Squadron Capital LLC 10% Owner Sell 250,000 $20.62 $5.2M 10,895,045 −2.2% of holding
Squadron Capital Holdings LLC 10% Owner Sell 250,000 $20.62 $5.2M 10,895,045 −2.2% of holding
Pritzker Jennifer N. 10% Owner Sell 250,000 $20.62 $5.2M 10,895,045 −2.2% of holding
Marshall Tyson Eliot GENERAL COUNSEL & CORP. SEC. Sell 70,000 $19.51 $1.4M 368,331 −16% of holding
Lish Scott CHIEF OPERATING OFFICER Sell 25,000 $19.80 $495.0K 672,207 −3.6% of holding
Pelizzon David R Director Sell 250,000 $20.80 $5.2M 11,145,045 −2.2% of holding
Squadron Capital LLC 10% Owner Sell 250,000 $20.80 $5.2M 11,145,045 −2.2% of holding
Squadron Capital Holdings LLC 10% Owner Sell 250,000 $20.80 $5.2M 11,145,045 −2.2% of holding
Pritzker Jennifer N. 10% Owner Sell 250,000 $20.80 $5.2M 11,145,045 −2.2% of holding
Rydin Jeffrey P Director Sell 200,000 $19.32 $3.9M 385,441 −34.2% of holding
Miles Patrick CEO Sell 10b5-1 100,000 $18.96 $1.9M 5,364,078 −1.8% of holding
Hunsaker Craig E EVP, PEOPLE & CULTURE Sell 10b5-1 100,000 $19.95 $2.0M 1,289,142 −7.2% of holding
Sponsel David EVP, SALES Sell 10b5-1 70,000 $16.18 $1.1M 461,861 −13.2% of holding
Miles Patrick CEO Sell 10b5-1 100,000 $13.96 $1.4M 5,464,078 −1.8% of holding
Sponsel David EVP, SALES Sell 10b5-1 2,555 $15.34 $39.2K 531,861 −0.5% of holding
Sponsel David EVP, SALES Sell 10b5-1 137,445 $15.09 $2.1M 534,416 −20.5% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.