Gregg Williams

Director · Vivani Medical

Gregg Williams (Director) filed 10 Form 4 reports in the trailing twelve months (10 purchases, 0 sales), most often in Vivani Medical, Inc. (VANI). Across 10 priced purchase filings, the average 21-session return was -1.4% from execution and -3.0% from disclosure (delay-adjusted; derived). The largest single filing was $2.0M of VANI (1,351,351 sh × $1.48, as filed), executed Jan 27. Data as of Nov 8 2026.

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Return, ttmiAverage return per filing, trailing twelve months

-1.4%

avg across 10 priced filings

Delay-adjustediThe same average, entered at disclosure dates

-3.0%

same 10 filings, from disclosure

Filings, ttm

10 buys · 0 sells

Median delay

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$16.6M

shares × price, as filed

Last traded

Jul 15

Filed Jul 16

Median ADV $616K across their filed names

Impact on $10,000 · 12M

$6,645 (-33.5%)

S&P 500 $10,907 (+9.1%) · 42.6 pts behind

Gregg Williams S&P 500

Derived: compounded across filings from disclosure dates · past 12 months

Open performance→

Volume by month

Buys $29.0M Sells $0

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

Sectors filed on

Healthcare 10 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 → $1000K
793,650 sh × $1.26
Exec Jul 15
Filed Jul 16 · 9:00 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,587,301 sh × $1.26
Exec Jun 15
Filed Jun 16 · 9:00 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,587,301 sh × $1.26
Exec May 15
Filed May 19 · 8:31 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,587,301 sh × $1.26
Exec Apr 15
Filed Apr 16 · 6:30 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $1.7M
1,575,231 sh across 2 lots
Exec Mar 15
Filed Mar 16 · 6:15 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,866,492 sh across 2 lots
Exec Feb 15
Filed Feb 17 · 6:01 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,351,351 sh × $1.48
Exec Jan 27
Filed Jan 28 · 10:01 AM ET VANIPURCHASE Vivani Medical, Inc. View filing → $2.0M
1,737,765 sh across 2 lots
Exec Jan 15
Filed Jan 20 · 9:00 AM ET More filings →