William B. Horne
CIK 1333268 · Chief Executive Officer · last filed 2026-07-01
"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
$596
Companies
4
Total Filings
43
Lifetime Open-Market Net
$145.7K
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 |
|---|---|---|---|---|---|---|---|
| GPUS | Chief Executive Officer | 5,000 | $0.12 | $596 | $128.7K | 7 | 2026-07-01 |
| ALZN | Director | 0 | $1.31 | $0 | $6.0K | 9 | 2025-12-23 |
| Hyperscale Data, Inc. (NILE) Delisted | Chief Executive Officer | 203,306 | $0.12 | $24.9K | $0 | 1 | 2022-05-17 |
| Hyperscale Data, Inc. (DPW) Delisted | Chief Executive Officer | 136,639 | $1.60 | $218.6K | $11.0K | 15 | 2021-12-03 |
Recent Filings · Page 5 of 5
43 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 |
|---|---|---|---|---|---|
| 2008-04-14 | — | Grant (A) | +10,000 | $14.9K | |
| 2007-05-16 | — | Mixed | +115,536 | $50.0K | |
| 2007-04-17 | — | Grant (A) | — | $0 |
Showing 41–43 of 43
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Page 5 of 5
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.