Donald F Jr Robertson
CIK 1526111 · Principal Accounting Officer · last filed 2026-03-20
"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
$87.92M
Companies
3
Total Filings
73
Lifetime Open-Market Net
-$28.89M
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.
Recent Filings · Page 7 of 8
73 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 |
|---|---|---|---|---|---|
| 2014-07-30 | SNDK | Mixed | +631 | $58.4K | EDGAR |
| 2014-02-26 | SNDK | Mixed | +863 | $65.0K | EDGAR |
| 2014-02-20 | SNDK | Grant (A) | — | $0 | EDGAR |
| 2014-02-19 | SNDK | Mixed | +1,126 | $84.0K | EDGAR |
| 2013-10-31 | SNDK | Mixed | — | -$433.9K | EDGAR |
| 2013-07-29 | SNDK | Mixed | +625 | $35.6K | EDGAR |
| 2013-02-26 | SNDK | Mixed | +854 | $42.2K | EDGAR |
| 2013-02-20 | SNDK | Mixed | +526 | -$429.6K | EDGAR |
| 2012-07-30 | SNDK | Mixed | +634 | $26.9K | EDGAR |
| 2012-02-28 | SNDK | Mixed | −196 | -$9.7K | 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.