ATEC

insider transactions

Alphatec Holdings, Inc. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 90d

+128.9K

135.0K buy · 6.0K sell

Net value · 90d

$947.7K

$996.2K in · $48.5K out

Sentiment · 90d

Net buying

95% buying · 5% selling

Open-market trades · 90d

135.0K buy · 6.0K sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Sell·S
Jun 11, 26

Karen K Mcginnis

Director · 10b5-1

$48.5K

6.0K sh · $8.01

Own -6%
Grant·A
Jun 10, 26

David R Pelizzon

Director

$0

32.0K sh

Own +9%
Grant·A
Jun 10, 26

Quentin S. Blackford

Director

$0

32.0K sh

Own +6%
Grant·A
Jun 10, 26

David M Demski

Director

$0

32.0K sh

Own +8%
Grant·A
Jun 10, 26

Mortimer Berkowitz III

Director

$0

32.0K sh

Own +5%
Grant·A
Jun 10, 26

Keith Valentine

Director

$0

32.0K sh

Own +14%
Grant·A
Jun 10, 26

Karen K Mcginnis

Director · 10b5-1

$0

32.0K sh

Own +47%
Buy·P
May 11, 26

Keith Valentine

Director

$245.0K

35.0K sh · $7.00

Own +18%
Buy·P
May 8, 26

Keith Valentine

Director

$330.6K

43.8K sh · $7.54

Own +29%
Buy·P
May 7, 26

Keith Valentine

Director

$420.6K

56.2K sh · $7.49

Own +58%
Exercise·M
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$0

60.0K sh

Own New
Exercise·M
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$0

12.5K sh

Own New
Exercise·M
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$0

15.0K sh

Own New
Other·F
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$258.0K

23.4K sh · $11.03

Own -4%
Exercise·M
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$161.4K

60.0K sh · $2.69

Own +10%
Exercise·M
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$41.8K

12.5K sh · $3.34

Own +2%
Exercise·M
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$25.2K

15.0K sh · $1.68

Own +3%
Exercise·M
Apr 7, 26

Tyson Eliot Marshall

GENERAL COUNSEL & CORP. SEC.

$29.7K

15.0K sh · $1.98

Own +3%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 11, 2026	Karen K Mcginnis 10b5-1	Director	Sell S	6.0K	-6%	$8.01	$48.5K
Jun 10, 2026	David R Pelizzon	Director	Grant A	32.0K	+9%	—	$0
Jun 10, 2026	Quentin S. Blackford	Director	Grant A	32.0K	+6%	—	$0
Jun 10, 2026	David M Demski	Director	Grant A	32.0K	+8%	—	$0
Jun 10, 2026	Mortimer Berkowitz III	Director	Grant A	32.0K	+5%	—	$0
Jun 10, 2026	Keith Valentine	Director	Grant A	32.0K	+14%	—	$0
Jun 10, 2026	Karen K Mcginnis 10b5-1	Director	Grant A	32.0K	+47%	—	$0
May 11, 2026	Keith Valentine	Director	Buy P	35.0K	+18%	$7.00	$245.0K
May 8, 2026	Keith Valentine	Director	Buy P	43.8K	+29%	$7.54	$330.6K
May 7, 2026	Keith Valentine	Director	Buy P	56.2K	+58%	$7.49	$420.6K
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Exercise M	60.0K	New	—	$0
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Exercise M	12.5K	New	—	$0
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Exercise M	15.0K	New	—	$0
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Other F	23.4K	-4%	$11.03	$258.0K
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Exercise M	60.0K	+10%	$2.69	$161.4K
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Exercise M	12.5K	+2%	$3.34	$41.8K
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Exercise M	15.0K	+3%	$1.68	$25.2K
Apr 7, 2026	Tyson Eliot Marshall	GENERAL COUNSEL & CORP. SEC.	Exercise M	15.0K	+3%	$1.98	$29.7K

About ATEC insider trading

This page tracks insider transactions for Alphatec Holdings, Inc. (ATEC) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.