John Todd Koning Alphatec Holdings, Inc. (ATEC) insider trading activity

John Todd Koning is CHIEF FINANCIAL OFFICER of Alphatec Holdings, Inc.. Currently has a direct ownership of 445,955 shares of ATEC, which is worth approximately $8.8 Million. The most recent transaction as insider was on Dec 08, 2025, when has been sold 15,266 shares (Common Stock) at a price of $21.45 per share, resulting in proceeds of $327,455. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 446K

3.31% 3M change

13.37% 12M change

Total Value Held $8.8 Million

John Todd Koning Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 08 2025	SELL Payment of exercise price or tax liability	$327,455 $21.45 p/Share	15,266 Reduced 3.31%	445,955 Common Stock
Aug 06 2025	SELL Payment of exercise price or tax liability	$81,532 $15.34 p/Share	5,315 Reduced 1.14%	461,221 Common Stock
Apr 22 2025	SELL Open market or private sale	$401,625 $10.71 p/Share	37,500 Reduced 7.44%	466,536 Common Stock
Apr 01 2025	BUY Grant, award, or other acquisition	-	20,929 Added 3.99%	504,036 Common Stock
Mar 10 2025	SELL Open market or private sale	$1,604,976 $9.72 p/Share	165,121 Reduced 25.47%	483,107 Common Stock
Jan 29 2025	BUY Grant, award, or other acquisition	-	254,872 Added 28.22%	648,228 Common Stock
Apr 24 2024	SELL Open market or private sale	$480,750 $12.82 p/Share	37,500 Reduced 8.7%	393,356 Common Stock

Mar 01 2024	SELL Open market or private sale	$1,617,293 $13.3 p/Share	121,601 Reduced 22.01%	430,856 Common Stock
Feb 21 2024	BUY Grant, award, or other acquisition	-	31,746 Added 5.43%	552,457 Common Stock
Feb 01 2024	SELL Payment of exercise price or tax liability	$407,876 $16.68 p/Share	24,453 Reduced 4.49%	520,711 Common Stock
Feb 01 2024	BUY Grant, award, or other acquisition	-	129,612 Added 19.21%	545,164 Common Stock
Apr 20 2023	SELL Open market or private sale	$270,930 $16.42 p/Share	16,500 Reduced 3.82%	415,552 Common Stock
Feb 27 2023	SELL Open market or private sale	$332,100 $14.76 p/Share	22,500 Reduced 4.95%	432,052 Common Stock
Feb 22 2023	SELL Open market or private sale	$185,565 $14.2 p/Share	13,068 Reduced 2.7%	470,644 Common Stock
Feb 01 2023	BUY Grant, award, or other acquisition	-	187,451 Added 27.93%	483,712 Common Stock
Apr 28 2022	SELL Payment of exercise price or tax liability	$185,702 $11.54 p/Share	16,092 Reduced 5.43%	280,169 Common Stock
Mar 18 2022	SELL Payment of exercise price or tax liability	$115,767 $10.94 p/Share	10,582 Reduced 3.45%	296,261 Common Stock
Feb 24 2022	BUY Grant, award, or other acquisition	-	110,161 Added 26.42%	306,843 Common Stock
Dec 16 2021	BUY Open market or private purchase	$55,850 $11.17 p/Share	5,000 Added 2.48%	196,682 Common Stock
Apr 19 2021	BUY Grant, award, or other acquisition	-	190,000 Added 50.0%	190,000 Common Stock

Also insider at

MASI

MASIMO CORP Healthcare

SVP, Chief Accounting Officer

JTK

John Todd Koning

CHIEF FINANCIAL OFFICER

Irvine, CA

Institutional Portfolio Updates

Receive a notification when an Institution or Guru buys or sells ATEC shares.

Notify only if

Value

Insider Trading

Get notified when an Alphatec Holdings, Inc. insider buys or sells ATEC shares.

Notify only if

Operation

Value

Type

News

Receive news related to Alphatec Holdings, Inc.

Track Activities on ATEC

Account