David Sponsel

ATEC

David Sponsel serves as officer: EVP, SALES at Alphatec Holdings, Inc. (ATEC). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

36 trades

$15.79M

Net Position

Net Seller

$15.79M

Companies Traded

ATEC

Active Period

Apr 2021 – Mar 2026

36 total trades

Most Recent

Sell ATEC

Mar 13, 2026 · $2.05M

David Sponsel's Insider Trading at Alphatec Holdings, Inc. (ATEC)

Buys

0 · $0.00

Sells

36 · $15.79M

Total Shares Bought

Total Shares Sold

1,153,862

ATEC Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Mar 13, 2026	Sell	163,452	$12.52	$2.05M	504,932
Feb 5, 2026	Sell	60,425	$13.79	$833.3K	0
Dec 10, 2025	Sell	21,106	$20.79	$438.8K	0
Dec 8, 2025	Sell	988	$21.45	$21.2K	0
Oct 24, 2025	Sell	70,000	$16.18	$1.13M	0
Sep 18, 2025	Sell	140,000	$15.09	$2.11M	0
Aug 6, 2025	Sell	982	$15.34	$15.1K	0
Mar 6, 2025	Sell	33,732	$10.83	$365.3K	0
Feb 24, 2025	Sell	32,365	$10.54	$341.1K	0
Feb 3, 2025	Sell	36,256	$11.42	$414.0K	0
Jan 10, 2025	Sell	58,521	$10.71	$626.6K	0
Dec 11, 2024	Sell	62,018	$9.69	$601.0K	0
Feb 27, 2024	Sell	32,365	$15.19	$491.6K	0
Feb 21, 2024	Sell	17,820	$15.34	$273.4K	0
Feb 14, 2024	Sell	2,500	$16.16	$40.4K	0
Feb 1, 2024	Sell	36,620	$16.47	$603.1K	0
Jan 16, 2024	Sell	2,500	$15.00	$37.5K	0
Dec 21, 2023	Sell	2,500	$15.00	$37.5K	0
Jun 15, 2023	Sell	55,577	$16.17	$898.7K	0
May 15, 2023	Sell	68,174	$15.59	$1.06M	0
Apr 26, 2023	Sell	35,590	$16.15	$574.8K	0
Mar 6, 2023	Sell	16,823	$15.82	$266.1K	0
Jan 9, 2023	Sell	10,000	$11.99	$119.9K	0
Dec 5, 2022	Sell	10,000	$9.88	$98.8K	0
Nov 7, 2022	Sell	10,000	$9.25	$92.5K	0
Aug 11, 2022	Sell	620	$8.91	$5.5K	0
Jun 3, 2022	Sell	3,099	$7.46	$23.1K	0
May 17, 2022	Sell	34,087	$8.26	$281.6K	0
Apr 28, 2022	Sell	33,517	$11.54	$386.8K	0
Nov 12, 2021	Sell	9,847	$11.56	$113.8K	0
Aug 5, 2021	Sell	620	$15.23	$9.4K	0
Jul 1, 2021	Sell	3,099	$15.32	$47.5K	0
Jun 16, 2021	Sell	10,000	$14.78	$147.8K	0
May 17, 2021	Sell	34,087	$14.81	$504.8K	0
May 3, 2021	Sell	30,000	$15.97	$479.1K	0
Apr 26, 2021	Sell	14,572	$16.63	$242.3K	0