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Kirk G. Nielsen

CIK 1523522 · last filed 2026-06-03

Kirk G. Nielsen is a corporate insider who has filed 30 SEC Form 4 insider transactions across 3 companies since 2020. The most recent filing, for CVRX, was dated Jun 3, 2026. Across all open-market trades the lifetime net is +$5.3M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $94.8M across reported positions. 2 SEC filings were submitted jointly with Peter Justin Klein.

"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

$94.80M

Companies

3

Total Filings

30

Lifetime Open-Market Net

$5.33M

Filer Profile

Reported Address
ONE SANSOME STREET
SUITE 3630
SAN FRANCISCO, CA 94104
Phone
(650) 233-7877
Related Filers
Peter Justin Klein — 2 joint filings, latest 2026-02-10
Vensana Capital I, L.P. — 2 joint filings, latest 2026-02-10
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
CVRX Director 1,918,854 $2.70 $5.18M $2.71M 16 2026-06-03
SGP Director 3,310,619 $27.07 $89.62M $2.64M 3 2026-02-11
Inari Medical, Inc. (NARI) Delisted Director 61,479 $79.97 $4.92M -$24.7K 11 2023-05-30

Recent Filings

30 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
2026-06-03 CVRX Grant (A) +8,720 $0 EDGAR
2026-02-11 SGP Conv (C) — $0 EDGAR
2026-02-10 SGP Mixed +3,310,619 $2.64M EDGAR
2026-02-09 SGP Grant (A) — $0 EDGAR
2025-06-05 CVRX Grant (A) — $0 EDGAR
2025-05-19 CVRX Buy (P) +10,966 $59.8K EDGAR
2025-05-14 CVRX Buy (P) +187,813 $977.3K EDGAR
2024-06-07 CVRX Grant (A) — $0 EDGAR
2024-06-06 CVRX Grant (A) — $0 EDGAR
2023-06-07 CVRX Grant (A) — $0 EDGAR
Showing 1–10 of 30
Page 1 of 3
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.