DIANA J WALTERS
CIK 1007203 · last filed 2026-06-02
"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
$2.11M
Companies
6
Total Filings
75
Lifetime Open-Market Net
-$914.6K
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 |
|---|---|---|---|---|---|---|---|
| SMR | Director | 22,176 | $7.58 | $168.0K | $0 | 4 | 2026-06-02 |
| TMQ | Director | 101,302 | $2.90 | $294.3K | -$821.6K | 55 | 2026-06-01 |
| ATO | Director | 9,300 | $177.66 | $1.65M | -$93.0K | 11 | 2025-02-06 |
| Alta Mesa Resources, Inc. /DE (AMRWW) Delisted | Director | 51,344 | — | — | $0 | 2 | 2018-04-13 |
| Trilogy Metals Inc. (NCQ) Delisted | Director | — | — | — | $0 | 1 | 2016-06-17 |
| Electrum Special Acquisition Corp (ELEC.U) Delisted | Director | 26,666 | — | — | $0 | 2 | 2015-06-18 |
Recent Filings · Page 8 of 8
75 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 |
|---|---|---|---|---|---|
| 2016-12-16 | TMQ | Grant (A) | — | $0 | EDGAR |
| 2016-12-02 | TMQ | Grant (A) | — | $0 | EDGAR |
| 2016-06-17 | Trilogy Metals Inc. (NCQ) Delisted | Grant (A) | — | $0 | EDGAR |
| 2015-06-18 | Electrum Special Acquisition Corp (ELEC.U) Delisted | Other (J) | −167 | $0 | EDGAR |
| 2015-06-12 | Electrum Special Acquisition Corp (ELEC.U) Delisted | Other (J) | +3,833 | $0 | EDGAR |
Showing 71–75 of 75
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Page 8 of 8
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.