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William A Siffermann

CIK 1714150 · Vice President · last filed 2026-03-06

William A Siffermann is a Vice President who has filed 17 SEC Form 4 insider transactions across 7 companies since 2018. The most recent filing shows the insider bought $811 of JRS on Mar 6, 2026. Across all open-market trades the lifetime net is +$24.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $39.8K 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

$39.8K

Companies

7

Total Filings

17

Lifetime Open-Market Net

$24.0K

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
JRS Vice President 485 $8.87 $4.3K $2.7K 3 2026-03-06
NBB Vice President 615 $15.28 $9.4K $1.2K 2 2026-03-06
NAD Vice President 1,041 $11.70 $12.2K $8.4K 4 2026-03-06
NMAI Vice President 330 $13.83 $4.6K $1.0K 1 2026-03-06
NMZ Vice President 913 $10.21 $9.3K $6.1K 3 2026-03-06
JQC Vice President — $4.75 — $0 1 2025-05-06
Nuveen Build America Bond Opportunity Fund (NBD) Delisted Vice President 302 — — $4.5K 1 2018-04-16

Recent Filings

17 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
2026-03-06 JRS Buy (P) +100 $811 EDGAR
2026-03-06 NBB Buy (P) +75 $1.2K EDGAR
2026-03-06 NAD Buy (P) +100 $1.2K EDGAR
2026-03-06 NMAI Buy (P) +75 $1.0K EDGAR
2026-03-06 NMZ Buy (P) +100 $1.0K EDGAR
2025-05-06 JQC Exer (X) — $0 EDGAR
2025-03-24 NAD Buy (P) +300 $3.5K EDGAR
2025-03-24 NMZ Buy (P) +300 $3.3K EDGAR
2023-04-05 NAD Buy (P) +100 $1.1K EDGAR
2018-11-20 NBB Other (J) +324 $0 EDGAR
Showing 1–10 of 17
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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.