JEFFREY W DUNN
CIK 1035986 · Chairman, President & CEO · last filed 2026-08-05
"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
$2.20M
Companies
1
Total Filings
90
Lifetime Open-Market Net
-$29.25M
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 |
|---|---|---|---|---|---|---|---|
| SIBN | Director | 117,130 | $18.80 | $2.20M | -$29.25M | 84 | 2026-08-05 |
Recent Filings · Page 4 of 9
90 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 |
|---|---|---|---|---|---|
| 2023-09-06 | SIBN | Mixed | — | -$365.8K | EDGAR |
| 2023-09-01 | SIBN | Notice (144) | −40,000 | -$915.2K | EDGAR |
| 2023-08-18 | SIBN | Sell (S) | −7,964 | -$167.1K | EDGAR |
| 2023-08-15 | SIBN | Mixed | — | -$343.2K | EDGAR |
| 2023-08-11 | SIBN | Notice (144) | −20,000 | -$413.4K | EDGAR |
| 2023-08-03 | SIBN | Sell (S) | −406 | -$10.2K | EDGAR |
| 2023-06-13 | SIBN | Grant (A) | +811 | $0 | EDGAR |
| 2023-05-18 | SIBN | Sell (S) | −7,962 | -$197.7K | EDGAR |
| 2023-05-10 | SIBN | Mixed | — | -$5.07M | EDGAR |
| 2023-05-05 | SIBN | Mixed | +9,795 | $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.