Home

John A DeFord

CIK 1403373 · Sr. VP Sci Tech and Clin Afrs · last filed 2026-08-03

John A DeFord is a Sr. VP Sci Tech and Clin Afrs who has filed 99 SEC Form 4 insider transactions across 4 companies since 2018. The most recent filing shows the insider was granted $25.0K of NDSN on Aug 3, 2026. Across all open-market trades the lifetime net is +$100.6K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $4.4M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$4.41M

Companies

4

Total Filings

99

Lifetime Open-Market Net

$100.6K

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
NDSN Director 5,902 $308.69 $1.82M $0 18 2026-08-03
MRVI Director 205,478 $6.07 $1.25M $100.6K 5 2026-05-28
GMED Director 15,578 $86.15 $1.34M $0 5 2026-01-23
NUVASIVE INC (NUVA) Delisted Director — $39.75 — $0 8 2023-09-05

Recent Filings

99 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-03 NDSN Grant (A) +84 $25.0K EDGAR
2026-05-28 MRVI Grant (A) +46,293 $0 EDGAR
2026-05-04 NDSN Grant (A) +87 $25.1K EDGAR
2026-04-14 GMED Notice (144) −30,000 -$2.79M EDGAR
2026-02-03 NDSN Grant (A) +91 $25.0K EDGAR
2026-01-23 GMED Grant (A) — $0 EDGAR
2025-11-03 NDSN Grant (A) +822 $190.7K EDGAR
2025-06-18 MRVI Grant (A) +89,139 $192.5K EDGAR
2025-03-28 GMED Grant (A) — $0 EDGAR
2024-11-14 MRVI Buy (P) +17,500 $100.6K EDGAR
Showing 1–10 of 99
Page 1 of 10
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.