Darin G Billerbeck
CIK 1388177 · Executive Chairman · last filed 2026-05-22
"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
$110.57M
Companies
3
Total Filings
102
Lifetime Open-Market Net
-$2.43M
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 4 of 11
102 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-05-20 | MRAM | Grant (A) | +21,359 | $0 | EDGAR |
| 2019-05-22 | MRAM | Grant (A) | +7,000 | $0 | EDGAR |
| 2018-08-22 | MRAM | Grant (A) | — | $0 | EDGAR |
| 2018-06-07 | LSCC | Mixed | +117,038 | -$630.0K | EDGAR |
| 2018-02-14 | LSCC | Mixed | +6,956 | -$20.6K | EDGAR |
| 2018-02-13 | LSCC | Mixed | +4,074 | -$12.5K | EDGAR |
| 2018-02-07 | LSCC | Mixed | +6,285 | -$24.1K | EDGAR |
| 2017-11-14 | LSCC | Mixed | +8,141 | -$55.1K | EDGAR |
| 2017-11-07 | LSCC | Mixed | +5,025 | -$30.9K | EDGAR |
| 2017-11-06 | LSCC | Mixed | +42,793 | -$254.7K | EDGAR |
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.