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DAVID S WICHMANN

CIK 1268489 · Chief Executive Officer · last filed 2026-05-11

DAVID S WICHMANN is a Chief Executive Officer who has filed 115 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for BSX, was dated May 11, 2026. Across all open-market trades the lifetime net is −$79.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $414.8M 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.

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Disclosed Exposure

$414.85M

Companies

4

Total Filings

115

Lifetime Open-Market Net

-$79.33M

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
BSX Director 45,382 $48.08 $2.18M $1.05M 8 2026-05-11
PRVA Director 1,341,049 $20.64 $27.68M $0 3 2025-05-23
UNH Chief Executive Officer 968,580 $396.30 $383.85M -$80.15M 91 2020-12-17
TNC Director 16,472 $69.22 $1.14M -$233.0K 13 2020-12-07

Recent Filings

115 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
2026-05-11 BSX Grant (A) +3,800 $0 EDGAR
2025-05-23 PRVA Grant (A) +8,396 $0 EDGAR
2025-05-09 BSX Grant (A) +2,081 $0 EDGAR
2024-05-23 PRVA Grant (A) +11,124 $0 EDGAR
2024-05-13 BSX Grant (A) +2,901 $0 EDGAR
2023-08-03 PRVA Grant (A) +6,189 $0 EDGAR
2023-05-05 BSX Grant (A) +3,946 $0 EDGAR
2023-04-04 BSX Grant (A) +41 $0 EDGAR
2022-05-06 BSX Grant (A) +7,613 $0 EDGAR
2021-11-16 BSX Buy (P) +25,000 $1.05M EDGAR
Showing 1–10 of 115
Page 1 of 12
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.