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Insider

David Sponsel

EVP, SALES

David Sponsel (EVP, SALES) filed 4 Form 4 reports in the trailing twelve months (0 purchases, 4 sales), most often in Alphatec Holdings, Inc. (ATEC). The largest single filing was $2.0M of ATEC (163,452 sh × $12.52, as filed), executed Mar 11.

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Return, ttmiAverage return per filing, trailing twelve months
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
returns measure stock purchases only
Filings, ttm
4
0 buys · 4 sells
Median delay
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$4.5M
shares × price, as filed
Last traded
Mar 11
Filed Mar 13

Median ADV $21.7M across their filed names

Open performance
Volume by month
$2.1M$1.0M$0Oct 2024Apr 2025Oct 2025Apr 2026Dec 2024 · sells $601KJan 2025 · sells $624KFeb 2025 · sells $755KMar 2025 · sells $365KSep 2025 · sells $2.1MOct 2025 · sells $1.1MDec 2025 · sells $439KFeb 2026 · sells $833KMar 2026 · sells $2.0M
Buys $0 Sells $8.9M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on
Healthcare 4 filings

Sector per market data · by filing · past 12 months

Most traded names
ATEC Alphatec Holdings, Inc. ATEC · 0 buys · 10 sells 10 filings
Recent filings
ATECSALE Alphatec Holdings, Inc. View filing → $624K
58,283 sh × $10.71
Exec Jan 13 2025
Filed Jan 14 2025 · 5:30 PM ET
ATECSALE Alphatec Holdings, Inc. View filing → $601K
62,018 sh × $9.69
Exec Dec 11 2024
Filed Dec 13 2024 · 5:30 PM ET