Gregg Williams

Director

Gregg Williams (Director) filed 12 Form 4 reports in the trailing twelve months (12 purchases, 0 sales), most often in Vivani Medical, Inc. (VANI). Across 12 priced purchase filings, the average 21-session return was -1.2% from execution and -4.4% from disclosure (delay-adjusted; derived). The largest single filing was $6.0M of VANI (3,703,703 sh × $1.62, as filed), executed Oct 27 2025.

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Return, ttmiAverage return per filing, trailing twelve months

-1.2%

avg across 12 priced filings

Delay-adjustediThe same average, entered at disclosure dates

-4.4%

same 12 filings, from disclosure

Filings, ttm

12 buys · 0 sells

Median delay

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$26.6M

shares × price, as filed

Last traded

Jul 15

Filed Jul 16

Median ADV $616K across their filed names

Impact on $10,000 · 12M

$6,021 (-39.8%)

S&P 500 $11,725 (+17.2%) · 57.0 pts behind

Gregg Williams S&P 500

Compounded across filings from disclosure dates · past 12 months

Open performance→

Volume by month

Buys $34.0M Sells $0

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

Sectors filed on

Healthcare 12 filings

Sector per market data · by filing · past 12 months

Most traded names

VANI

Vivani Medical, Inc. VANI · 14 buys · 0 sells 14 filings

Recent filings

VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,737,765 sh across 2 lots
Exec Dec 15 2025
Filed Dec 16 2025 · 9:00 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,737,764 sh across 2 lots
Exec Nov 15 2025
Filed Nov 17 2025 · 9:00 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $6.0M
3,703,703 sh × $1.62
Exec Oct 27 2025
Filed Oct 28 2025 · 9:00 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,737,764 sh across 2 lots
Exec Oct 15 2025
Filed Oct 16 2025 · 9:13 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.4M
2,068,453 sh across 2 lots
Exec Sep 15 2025
Filed Sep 17 2025 · 9:48 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $5.0M
3,968,253 sh × $1.26
Exec Nov 8 2024
Filed Nov 13 2024 · 5:30 PM ET