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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Mar 09 '26 | Sale | 12.45 | 82,765 | 1,030,424 | 1,726,209 | Mar 10 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Mar 06 '26 | Sale | 12.22 | 33,602 | 410,616 | 1,808,974 | Mar 10 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Feb 12 '26 | Option Exercise | 2.14 | 251,176 | 538,501 | 1,424,201 | Feb 17 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Feb 03 '26 | Sale | 14.71 | 37,358 | 549,536 | 1,173,025 | Feb 04 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Dec 10 '25 | Sale | 20.84 | 32,584 | 679,051 | 1,256,558 | Dec 12 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Oct 31 '25 | Sale | 19.95 | 100,000 | 1,995,000 | 1,289,142 | Oct 31 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Aug 06 '25 | Sale | 15.33 | 10,876 | 166,729 | 1,389,142 | Aug 07 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Aug 05 '25 | Sale | 15.00 | 50,000 | 750,000 | 1,400,018 | Aug 07 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Jun 05 '25 | Sale | 12.36 | 13,878 | 171,532 | 1,450,018 | Jun 06 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Jun 04 '25 | Sale | 12.34 | 186,122 | 2,296,745 | 1,463,896 | Jun 06 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Dec 10 '24 | Option Exercise | 2.01 | 110,919 | 223,474 | 1,299,363 | Dec 13 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Feb 26 '24 | Sale | 15.05 | 41,560 | 625,478 | 1,188,444 | Feb 28 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Feb 20 '24 | Sale | 15.16 | 77,255 | 1,171,186 | 1,188,814 | Feb 22 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Feb 05 '24 | Sale | 16.41 | 500 | 8,205 | 1,266,069 | Feb 05 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE & CULTURE | Feb 02 '24 | Sale | 16.51 | 38,556 | 636,560 | 1,266,569 | Feb 05 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Jun 28 '23 | Sale | 18.00 | 100,487 | 1,808,766 | 1,120,427 | Jun 28 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Jun 27 '23 | Sale | 18.00 | 6,542 | 117,756 | 1,220,914 | Jun 28 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | May 15 '23 | Sale | 15.29 | 58,238 | 890,459 | 1,227,456 | May 16 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Apr 24 '23 | Sale | 15.85 | 28,311 | 448,729 | 1,285,694 | Apr 24 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Mar 03 '23 | Sale | 16.00 | 32,823 | 525,168 | 1,314,005 | Mar 03 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Mar 01 '23 | Sale | 16.00 | 80,023 | 1,280,368 | 1,346,828 | Mar 01 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Feb 28 '23 | Sale | 14.96 | 9,938 | 148,672 | 1,426,851 | Mar 01 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Feb 27 '23 | Sale | 14.74 | 36,072 | 531,701 | 1,436,789 | Mar 01 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Feb 21 '23 | Sale | 14.04 | 65,716 | 922,653 | 1,472,861 | Feb 21 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Feb 17 '23 | Option Exercise | 3.50 | 134,921 | 472,224 | 1,570,916 | Feb 21 |
| ATEC | Hunsaker Craig E | EVP, PEOPLE/CULTURE & GC | Feb 09 '23 | Sale | 14.00 | 60,000 | 840,000 | 1,435,995 | Feb 10 |
| ATEC | Hunsaker Craig E | director: EVP, PEOPLE/CULTURE & GC | Jan 09 '23 | Sale | 12.60 | 40,000 | 504,000 | 1,211,174 | Jan 10 |
| ATEC | Hunsaker Craig E | director: EVP, PEOPLE/CULTURE & GC | Aug 15 '22 | Sale | 9.07 | 9,895 | 89,748 | 1,251,174 | Aug 17 |
| ATEC | Hunsaker Craig E | EVP, People/Culture & GC | Jun 13 '22 | Sale | 7.00 | 30,000 | 210,000 | 1,301,729 | Jun 15 |
| ATEC | Hunsaker Craig E | EVP, People/Culture & GC | Jun 01 '22 | Sale | 7.16 | 70,000 | 501,200 | 1,362,229 | Jun 03 |