David R Pelizzon

CIK 1719217 · last filed 2026-06-12

"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.

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Disclosed Exposure

$279.65M

Companies

2

Total Filings

36

Lifetime Open-Market Net

$72.07M

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
ATEC Director 10,773,884 $9.78 $105.37M $71.66M 19 2026-06-12
KIDS Director 6,946,148 $25.09 $174.28M $413.4K 17 2026-06-10

Recent Filings · Page 3 of 4

36 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
2021-11-10 ATEC Buy (P) +5,425 $70.5K EDGAR
2021-06-21 ATEC Grant (A) +10,221 $0 EDGAR
2021-06-04 KIDS Grant (A) +1,400 $0 EDGAR
2021-05-12 ATEC Buy (P) +120,000 $1.83M EDGAR
2021-03-17 KIDS Buy (P) +3,700 $172.1K EDGAR
2021-03-10 ATEC Buy (P) +4,698 $73.1K EDGAR
2021-03-03 ATEC Buy (P) +8,100,810 $90.00M EDGAR
2020-12-22 ATEC Grant (A) +1,350,135 $15.00M EDGAR
2020-06-22 KIDS Exer (M) +1,340 $41.5K EDGAR
2020-06-19 ATEC Grant (A) +21,142 $0 EDGAR
Showing 2130 of 36
Page 3 of 4
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.