| Insiders | Shares | % | Avg Price | Total $ | |
|---|---|---|---|---|---|
| Buys | 0 | ||||
| Sells | 14 | -6,077,725 | 100% | $18.35 | -$111,507,177 |
| Net | -14 | -6,077,725 | -100% | -$111,507,177 |
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Report Date |
|---|---|---|---|---|---|
| Jennifer N. Pritzker | 10%+ Owner | $225,036,896 | -$15,650,098 | -6.5% | 08 Dec 2025 |
| Squadron Capital Holdings LLC | 10%+ Owner | $223,865,296 | -$15,650,098 | -6.5% | 08 Dec 2025 |
| Squadron Capital LLC | 10%+ Owner | $223,865,296 | -$15,650,098 | -6.5% | 08 Dec 2025 |
| David R. Pelizzon | Director | $211,171,329 | -$20,565,098 | -8.9% | 16 Dec 2025 |
| L-5 Healthcare Partners, LLC | Director by deputization, 10%+ Owner | $166,223,070 | 10 May 2023 | ||
| Paul Segal | Director | $147,384,455 | 15 Jun 2023 | ||
| Patrick Miles | CEO, Director | $81,351,404 | -$12,323,000 | -13% | 05 Mar 2026 |
| Ward W. Woods Jr. | Director | $28,008,326 | 11 Jun 2025 | ||
| James L. L. Tullis | Director | $25,761,387 | 31 Dec 2023 | ||
| Craig E. Hunsaker | Evp, People & Culture | $23,243,953 | -$8,049,634 | -26% | 06 Mar 2026 |
| Mortimer Berkowitz III | Director | $19,525,669 | -$998,125 | -4.9% | 09 Sep 2025 |
| Scott Lish | Chief Operating Officer | $10,033,159 | -$6,690,736 | -40% | 13 Mar 2026 |
| Brian Snider | Evp, Marketing | $9,830,730 | 05 Aug 2022 | ||
| David M. Demski | Director | $8,472,007 | -$636,000 | -7% | 11 Dec 2025 |
| Kelli M. Howell | Evp, Clinical Strategies | $8,101,470 | 05 Aug 2022 | ||
| Jeffrey P. Rydin | Director | $7,446,720 | -$3,864,000 | -34% | 03 Nov 2025 |
| John Todd Koning | Chief Financial Officer | $7,424,911 | -$1,387,817 | -16% | 13 Mar 2026 |
| Quentin S. Blackford | Director | $7,201,235 | 11 Jun 2025 | ||
| Tyson E. Marshall | General Counsel & Corp. Sec. | $6,987,642 | -$3,408,975 | -33% | 05 Mar 2026 |
| Evan Bakst | Director | $6,657,322 | 23 Aug 2024 | ||
| David Sponsel | Evp, Sales | $6,321,748 | -$6,585,505 | -51% | 11 Mar 2026 |
| Donald Allen Williams | Director | $2,020,920 | 16 Jun 2021 | ||
| David H. Mowry | Director | $1,385,715 | 11 Sep 2023 | ||
| Jason Hochberg | Director | $1,265,625 | 15 Dec 2021 | ||
| Keith Valentine | Director | $1,232,423 | 11 Jun 2025 | ||
| Marie Meynadier | Director | $886,890 | 20 Jun 2023 | ||
| Karen K. Mcginnis | Director | $832,065 | -$47,992 | -5.5% | 11 Jun 2025 |
| Elizabeth Ann Altman | Director | $615,990 | 20 Jun 2023 | ||
| Andy Barnett | Director | $278,190 | 15 Jun 2022 |
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John Todd Koning | ATEC | Common Stock | Sale | -11.7% | $986,192 | $12.36 | -79,789 | 600,721 | 13 Mar 2026 | Direct |
| Scott Lish | ATEC | Common Stock | Sale | -24.2% | $3,204,580 | $12.30 | -260,535 | 815,704 | 13 Mar 2026 | Direct |
| David Sponsel | ATEC | Common Stock | Sale | -24.4% | $2,046,419 | $12.52 | -163,452 | 504,932 | 11 Mar 2026 | Direct |
| Craig E. Hunsaker | ATEC | Common Stock | Gift | -0.03% | -600 | 1,725,609 | 09 Mar 2026 | Direct | ||
| Craig E. Hunsaker | ATEC | Common Stock | Sale | -4.58% | $1,030,424 | $12.45 | -82,765 | 1,726,209 | 09 Mar 2026 | Direct |
| Craig E. Hunsaker | ATEC | Common Stock | Sale | -1.82% | $410,616 | $12.22 | -33,602 | 1,808,974 | 06 Mar 2026 | Direct |
| John Todd Koning | ATEC | Common Stock | Tax liability | -9.2% | -68,910 | 680,510 | 05 Mar 2026 | Direct | ||
| Patrick Miles | ATEC | Common Stock | Tax liability | -3.66% | -219,749 | 5,778,551 | 05 Mar 2026 | Direct | ||
| Tyson E. Marshall | ATEC | Common Stock | Sale | -13.7% | $1,109,549 | $12.49 | -88,835 | 559,459 | 05 Mar 2026 | Direct |
| Tyson E. Marshall | ATEC | Common Stock | Award | 87.7% | 302,852 | 648,294 | 25 Feb 2026 | Direct | ||
| Tyson E. Marshall | ATEC | Restricted Stock Units | Award | 84,918 | 42,459 | 25 Feb 2026 | Direct | |||
| David Sponsel | ATEC | Common Stock | Award | 91.2% | 318,884 | 668,384 | 25 Feb 2026 | Direct | ||
| David Sponsel | ATEC | Restricted Stock Units | Award | 93,410 | 46,705 | 25 Feb 2026 | Direct | |||
| John Todd Koning | ATEC | Common Stock | Award | 81.2% | 335,868 | 749,420 | 25 Feb 2026 | Direct | ||
| John Todd Koning | ATEC | Restricted Stock Units | Award | 110,394 | 55,197 | 25 Feb 2026 | Direct | |||
| Scott Lish | ATEC | Common Stock | Award | 74.5% | 459,480 | 1,076,239 | 25 Feb 2026 | Direct | ||
| Scott Lish | ATEC | Restricted Stock Units | Award | 127,378 | 63,689 | 25 Feb 2026 | Direct | |||
| Craig E. Hunsaker | ATEC | Common Stock | Award | 33.2% | 459,480 | 1,842,576 | 25 Feb 2026 | Direct | ||
| Craig E. Hunsaker | ATEC | Restricted Stock Units | Award | 127,378 | 63,689 | 25 Feb 2026 | Direct | |||
| Patrick Miles | ATEC | Common Stock | Award | 19.2% | 966,293 | 5,998,300 | 25 Feb 2026 | Direct | ||
| Patrick Miles | ATEC | Restricted Stock Units | Award | 305,706 | 152,853 | 25 Feb 2026 | Direct | |||
| Craig E. Hunsaker | ATEC | Common Stock | Tax liability | -2.89% | -41,105 | 1,383,096 | 12 Feb 2026 | Direct | ||
| Craig E. Hunsaker | ATEC | Common Stock | Options Exercise | 21.4% | 251,176 | 1,424,201 | 12 Feb 2026 | Direct | ||
| Craig E. Hunsaker | ATEC | Employee Stock Option (right to buy) | Options Exercise | -100% | -251,176 | 0 | 12 Feb 2026 | Direct | ||
| David Sponsel | ATEC | Common Stock | Sale | -14.7% | $833,261 | $13.79 | -60,425 | 349,500 | 05 Feb 2026 | Direct |
| Craig E. Hunsaker | ATEC | Common Stock | Sale | -3.09% | $549,536 | $14.71 | -37,358 | 1,173,025 | 03 Feb 2026 | Direct |
| Patrick Miles | ATEC | Common Stock | Sale | -1.91% | $2,101,000 | $21.01 | -100,000 | 5,135,398 | 05 Jan 2026 | Direct |
| Scott Lish | ATEC | Common Stock | Sale | -3.01% | $390,836 | $19.64 | -19,900 | 641,432 | 16 Dec 2025 | Direct |
| David R. Pelizzon | ATEC | Common Stock | Sale | -2.35% | $4,915,000 | $19.66 | -250,000 | 10,395,045 | 16 Dec 2025 | By Squadron Capital LLC |
| David M. Demski | ATEC | Common Stock | Sale | -6.98% | $636,000 | $21.20 | -30,000 | 399,623 | 11 Dec 2025 | Direct |
| Craig E. Hunsaker | ATEC | Common Stock | Sale | -2.53% | $679,051 | $20.84 | -32,584 | 1,256,558 | 10 Dec 2025 | Direct |
| David Sponsel | ATEC | Common Stock | Sale | -4.58% | $438,794 | $20.79 | -21,106 | 439,767 | 10 Dec 2025 | Direct |
| David R. Pelizzon | ATEC | Common Stock | Sale | -0.27% | $606,379 | $21.03 | -28,834 | 10,645,045 | 09 Dec 2025 | By Squadron Capital LLC |
| Squadron Capital LLC | ATEC | Common Stock | Sale | -0.27% | $606,379 | $21.03 | -28,834 | 10,645,045 | 09 Dec 2025 | Direct |
| Squadron Capital Holdings LLC | ATEC | Common Stock | Sale | -0.27% | $606,379 | $21.03 | -28,834 | 10,645,045 | 09 Dec 2025 | See footnote |
| Jennifer N. Pritzker | ATEC | Common Stock | Sale | -0.27% | $606,379 | $21.03 | -28,834 | 10,645,045 | 09 Dec 2025 | See footnote |
| David R. Pelizzon | ATEC | Common Stock | Sale | -2.03% | $4,688,719 | $21.20 | -221,166 | 10,673,879 | 08 Dec 2025 | By Squadron Capital LLC |
| Squadron Capital LLC | ATEC | Common Stock | Sale | -2.03% | $4,688,719 | $21.20 | -221,166 | 10,673,879 | 08 Dec 2025 | Direct |
| John Todd Koning | ATEC | Common Stock | Tax liability | -3.31% | -15,266 | 445,955 | 08 Dec 2025 | Direct | ||
| Patrick Miles | ATEC | Common Stock | Tax liability | -0.54% | -28,680 | 5,235,398 | 08 Dec 2025 | Direct | ||
| David Sponsel | ATEC | Common Stock | Sale | -0.21% | $21,193 | $21.45 | -988 | 460,873 | 08 Dec 2025 | Direct |
| Squadron Capital Holdings LLC | ATEC | Common Stock | Sale | -2.03% | $4,688,719 | $21.20 | -221,166 | 10,673,879 | 08 Dec 2025 | See footnote |
| Jennifer N. Pritzker | ATEC | Common Stock | Sale | -2.03% | $4,688,719 | $21.20 | -221,166 | 10,673,879 | 08 Dec 2025 | See footnote |
| Scott Lish | ATEC | Common Stock | Sale | -1.62% | $233,486 | $21.47 | -10,875 | 661,332 | 05 Dec 2025 | Direct |
| Tyson E. Marshall | ATEC | Common Stock | Sale | -6.21% | $491,526 | $21.47 | -22,889 | 345,442 | 05 Dec 2025 | Direct |
| Patrick Miles | ATEC | Common Stock | Sale | -1.86% | $2,211,000 | $22.11 | -100,000 | 5,264,078 | 01 Dec 2025 | Direct |
| Jennifer N. Pritzker | ATEC | Common Stock | Sale | -2.24% | $5,155,000 | $20.62 | -250,000 | 10,895,045 | 24 Nov 2025 | See footnote |
| Squadron Capital Holdings LLC | ATEC | Common Stock | Sale | -2.24% | $5,155,000 | $20.62 | -250,000 | 10,895,045 | 24 Nov 2025 | See footnote |
| David R. Pelizzon | ATEC | Common Stock | Sale | -2.24% | $5,155,000 | $20.62 | -250,000 | 10,895,045 | 24 Nov 2025 | By Squadron Capital LLC |
| Squadron Capital LLC | ATEC | Common Stock | Sale | -2.24% | $5,155,000 | $20.62 | -250,000 | 10,895,045 | 24 Nov 2025 | Direct |