Marshall Tyson Eliot Insider Trading Activity

Corporate InsiderGENERAL COUNSEL & CORP. SEC. · CIK 1666669

Total trades

$3.4M

Total volume

Mar 5, 2026

Last activity

ATEC

Alphatec Holdings, Inc.

Marshall Tyson Eliot has been net-selling over the last 12 months with 0 purchases and 7 sales across 1 company.

ATEC is the most-traded position with 7 trades. The largest single transaction was a sale of ATEC for $1.4M on Nov 20, 2025.

Performance Scorecard

Forward stock performance after each transaction by Marshall Tyson Eliot. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	—	-9.0%	38%	8
90 days	—	+5.0%	50%	8
120 days	—	-9.1%	50%	8

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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ATEC · Alphatec Holdings, Inc.

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
Mar 5, 2026	ATEC	Sell	88,835	$12.49	$1.1M	−13.7%	GENERAL COUNSEL & CORP. SEC.
Dec 5, 2025	ATEC	Sell	9,924	$21.48	$213K	−2.7%	GENERAL COUNSEL & CORP. SEC.
Dec 5, 2025	ATEC	Sell	12,965	$21.47	$278K	−3.6%	GENERAL COUNSEL & CORP. SEC.
Nov 20, 2025	ATEC	Sell	70,000	$19.51	$1.4M	−16.0%	GENERAL COUNSEL & CORP. SEC.
Aug 5, 2025	ATEC	Sell	8,168	$14.96	$122K	−1.8%	GENERAL COUNSEL & CORP. SEC.
Aug 5, 2025	ATEC	Sell	9,924	$14.86	$147K	−2.2%	GENERAL COUNSEL & CORP. SEC.
Aug 1, 2025	ATEC	Sell	12,878	$12.00	$155K	−2.7%	GENERAL COUNSEL & CORP. SEC.
Jul 10, 2025	ATEC	Sell	1,500	$12.00	$18K	−0.3%	GENERAL COUNSEL & CORP. SEC.