John William III Swann
CIK 1653288 · PRES., DETECTION & MEASUREMENT · last filed 2026-03-04
"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
$13.47M
Companies
1
Total Filings
48
Lifetime Open-Market Net
-$18.00M
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 |
|---|---|---|---|---|---|---|---|
| SPXC | PRES., DETECTION & MEASUREMENT | 63,452 | $212.35 | $13.47M | -$18.00M | 46 | 2026-03-04 |
Recent Filings · Page 4 of 5
48 filingsInsider 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 |
|---|---|---|---|---|---|
| 2020-02-25 | SPXC | Mixed | −1,546 | -$192.3K | EDGAR |
| 2020-02-24 | SPXC | Grant (A) | +11,023 | $0 | EDGAR |
| 2019-03-06 | SPXC | Tax (F) | −1,388 | -$50.6K | EDGAR |
| 2019-03-05 | SPXC | Tax (F) | −601 | -$21.9K | EDGAR |
| 2019-02-26 | SPXC | Mixed | −12,030 | -$443.2K | EDGAR |
| 2019-02-25 | SPXC | Grant (A) | +14,808 | $0 | EDGAR |
| 2018-10-17 | SPXC | Tax (F) | −14,220 | -$423.0K | EDGAR |
| 2018-03-06 | SPXC | Tax (F) | −1,035 | -$31.9K | EDGAR |
| 2018-03-05 | SPXC | Tax (F) | −448 | -$14.0K | EDGAR |
| 2018-02-26 | SPXC | Grant (A) | +8,638 | $0 | EDGAR |
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.
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.