David Vander Ploeg
CIK 1432894 · EVP/CFO · last filed 2026-08-13
"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
$2.61M
Companies
3
Total Filings
30
Lifetime Open-Market Net
-$202.0K
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 |
|---|---|---|---|---|---|---|---|
| KNX | Director | 37,404 | $69.74 | $2.61M | -$245.2K | 14 | 2026-08-13 |
| Knight-Swift Transportation Holdings Inc. (SWFT) Delisted | Director | 18,616 | — | — | $0 | 6 | 2017-05-25 |
| SCHOOL SPECIALTY INC (SCHS) Delisted | EVP / CFO | 18,958 | — | — | $43.1K | 9 | 2012-07-10 |
Recent Filings · Page 2 of 3
30 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 |
|---|---|---|---|---|---|
| 2020-05-20 | KNX | Grant (A) | +2,419 | $0 | EDGAR |
| 2019-11-01 | KNX | Mixed | +120 | -$66.3K | EDGAR |
| 2019-05-31 | KNX | Grant (A) | +2,854 | $0 | EDGAR |
| 2018-06-04 | KNX | Grant (A) | +2,458 | $0 | EDGAR |
| 2017-05-25 | Knight-Swift Transportation Holdings Inc. (SWFT) Delisted | Grant (A) | +4,168 | $100.0K | EDGAR |
| 2016-05-26 | Knight-Swift Transportation Holdings Inc. (SWFT) Delisted | Grant (A) | +6,447 | $0 | EDGAR |
| 2015-05-12 | Knight-Swift Transportation Holdings Inc. (SWFT) Delisted | Grant (A) | +3,532 | $0 | EDGAR |
| 2013-06-13 | — | Other (J) | −48,958 | $0 | |
| 2013-02-26 | Knight-Swift Transportation Holdings Inc. (SWFT) Delisted | Grant (A) | +2,620 | $0 | EDGAR |
| 2012-07-10 | SCHOOL SPECIALTY INC (SCHS) Delisted | Tax (F) | −2,466 | -$7.9K | 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.