SIDNEY B DEBOER
CIK 1170769 · Executive Chairman · last filed 2026-05-01
"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
$11.23M
Companies
1
Total Filings
192
Lifetime Open-Market Net
-$158.96M
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 |
|---|---|---|---|---|---|---|---|
| LAD | Director | 26,276 | $427.48 | $11.23M | -$158.96M | 183 | 2026-05-01 |
Recent Filings · Page 11 of 20
192 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 |
|---|---|---|---|---|---|
| 2017-03-08 | LAD | Sell (S) | −894 | -$84.8K | EDGAR |
| 2017-03-02 | LAD | Tax (F) | −142 | -$13.6K | EDGAR |
| 2017-02-17 | LAD | Mixed | +279,106 | -$23.02M | EDGAR |
| 2017-01-19 | LAD | Sell (S) | −8,800 | -$919.6K | EDGAR |
| 2017-01-13 | LAD | Sell (S) | −52,800 | -$5.36M | EDGAR |
| 2016-10-07 | LAD | Mixed | −37,600 | -$1.71M | EDGAR |
| 2016-09-30 | LAD | Sell (S) | −17,600 | -$1.67M | EDGAR |
| 2016-09-23 | LAD | Sell (S) | −17,600 | -$1.64M | EDGAR |
| 2016-08-02 | LAD | Tax (F) | −138 | -$11.8K | EDGAR |
| 2016-05-10 | LAD | Sell (S) | −229 | -$19.5K | 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.