DUCHENE TODD M
Officer · CORZ
As of 2026-09-16, DUCHENE TODD M has 71 Form 4 transactions on record across 1 company — 54 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in June in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $20.4M
- Indirect $0
| CORZ | direct | 1,207,896 sh | $20.4M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | CORZ | Sale | 10,000 @ $17.14 | $171K | −0.8% of holding | 1,207,896 | Form 4 |
| 2026-09-08 | CORZ | Sale | 10,000 @ $18.67 | $187K | −0.8% of holding | 1,217,896 | Form 4 |
| 2026-08-31 | CORZ | Sale | 10,000 @ $16.23 | $162K | −0.5% of holding | 1,927,896 | Form 4 |
| 2026-08-24 | CORZ | Sale | 10,000 @ $17.45 | $174K | −0.5% of holding | 1,937,896 | Form 4 |
| 2026-08-17 | CORZ | Sale | 10,000 @ $20.10 | $201K | −0.5% of holding | 1,959,101 | Form 4 |
| 2026-08-10 | CORZ | Sale | 9,000 @ $19.90 | $179K | −0.5% of holding | 1,970,101 | Form 4 |
| 2026-08-10 | CORZ | Sale | 1,000 @ $20.65 | $21K | −0.1% of holding | 1,969,101 | Form 4 |
| 2026-08-03 | CORZ | Sale | 7,500 @ $22.62 | $170K | −0.4% of holding | 1,979,101 | Form 4 |
| 2026-08-03 | CORZ | Sale | 1,500 @ $21.55 | $32K | −0.1% of holding | 1,986,601 | Form 4 |
| 2026-08-03 | CORZ | Sale | 1,000 @ $20.39 | $20K | −0.1% of holding | 1,988,101 | Form 4 |
| 2026-07-27 | CORZ | Sale | 8,300 @ $20.75 | $172K | −0.4% of holding | 1,990,801 | Form 4 |
| 2026-07-27 | CORZ | Sale | 1,600 @ $21.89 | $35K | −0.1% of holding | 1,989,201 | Form 4 |
| 2026-07-27 | CORZ | Sale | 100 @ $22.49 | $2K | −0.0% of holding | 1,989,101 | Form 4 |
| 2026-07-20 | CORZ | Sale | 10,000 @ $22.30 | $223K | −0.5% of holding | 1,999,101 | Form 4 |
| 2026-07-13 | CORZ | Sale | 9,700 @ $22.43 | $218K | −0.5% of holding | 2,013,726 | Form 4 |
| 2026-07-13 | CORZ | Sale | 300 @ $23.01 | $7K | −0.0% of holding | 2,013,426 | Form 4 |
| 2026-07-06 | CORZ | Sale | 10,000 @ $22.63 | $226K | −0.5% of holding | 2,023,426 | Form 4 |
| 2026-06-29 | CORZ | Sale | 8,800 @ $25.99 | $229K | −0.4% of holding | 2,040,095 | Form 4 |
| 2026-06-29 | CORZ | Sale | 1,100 @ $27.42 | $30K | −0.1% of holding | 2,038,995 | Form 4 |
| 2026-06-29 | CORZ | Sale | 100 @ $27.95 | $3K | −0.0% of holding | 2,038,895 | Form 4 |
| 2026-06-22 | CORZ | Sale | 7,600 @ $29.11 | $221K | −0.4% of holding | 2,051,295 | Form 4 |
| 2026-06-22 | CORZ | Sale | 2,400 @ $29.88 | $72K | −0.1% of holding | 2,048,895 | Form 4 |
| 2026-06-15 | CORZ | Sale | 9,900 @ $28.19 | $279K | −0.5% of holding | 2,058,995 | Form 4 |
| 2026-06-15 | CORZ | Sale | 100 @ $28.79 | $3K | −0.0% of holding | 2,058,895 | Form 4 |
| 2026-06-08 | CORZ | Sale | 5,500 @ $26.64 | $147K | −0.3% of holding | 2,073,395 | Form 4 |
| 2026-06-08 | CORZ | Sale | 4,500 @ $27.11 | $122K | −0.2% of holding | 2,068,895 | Form 4 |
| 2026-06-01 | CORZ | Sale | 5,500 @ $28.76 | $158K | −0.3% of holding | 2,078,895 | Form 4 |
| 2026-06-01 | CORZ | Sale | 3,200 @ $28.27 | $90K | −0.2% of holding | 2,084,395 | Form 4 |
| 2026-06-01 | CORZ | Sale | 1,300 @ $26.93 | $35K | −0.1% of holding | 2,087,595 | Form 4 |
| 2026-05-26 | CORZ | Sale | 10,000 @ $26.25 | $263K | −0.5% of holding | 2,088,895 | Form 4 |
| 2026-05-18 | CORZ | Sale | 9,600 @ $23.12 | $222K | −0.5% of holding | 1,960,748 | Form 4 |
| 2026-05-18 | CORZ | Sale | 400 @ $23.76 | $10K | −0.0% of holding | 1,960,348 | Form 4 |
| 2026-05-11 | CORZ | Sale | 7,400 @ $23.39 | $173K | −0.4% of holding | 1,970,348 | Form 4 |
| 2026-05-11 | CORZ | Sale | 2,600 @ $22.82 | $59K | −0.1% of holding | 1,977,748 | Form 4 |
| 2026-05-04 | CORZ | Sale | 9,900 @ $20.85 | $206K | −0.5% of holding | 1,980,448 | Form 4 |
| 2026-05-04 | CORZ | Sale | 100 @ $21.53 | $2K | −0.0% of holding | 1,980,348 | Form 4 |
| 2026-04-27 | CORZ | Sale | 10,000 @ $20.94 | $209K | −0.5% of holding | 1,990,348 | Form 4 |
| 2026-04-20 | CORZ | Sale | 10,000 @ $19.80 | $198K | −0.5% of holding | 2,000,348 | Form 4 |
| 2026-04-13 | CORZ | Sale | 9,600 @ $18.61 | $179K | −0.5% of holding | 2,027,489 | Form 4 |
| 2026-04-13 | CORZ | Sale | 400 @ $18.99 | $8K | −0.0% of holding | 2,027,089 | Form 4 |
| 2026-04-06 | CORZ | Sale | 10,000 @ $16.49 | $165K | −0.5% of holding | 2,037,089 | Form 4 |
| 2026-04-01 | CORZ | Sale | 10,000 @ $15.25 | $153K | −0.5% of holding | 2,047,089 | Form 4 |
| 2025-06-25 | CORZ | Sale | 7,759 @ $12.39 | $96K | −0.4% of holding | 2,049,689 | Form 4 |
| 2025-06-04 | CORZ | Sale | 50,000 @ $12.31 | $616K | −2.4% of holding | 2,050,102 | Form 4 |
| 2025-06-03 | CORZ | Sale | 60,000 @ $11.33 | $680K | −2.8% of holding | 2,100,102 | Form 4 |
| 2025-05-27 | CORZ | Sale | 50,000 @ $11.23 | $562K | −2.3% of holding | 2,160,102 | Form 4 |
| 2025-04-01 | CORZ | Sale | 7,921 @ $7.52 | $60K | −0.4% of holding | 2,015,502 | Form 4 |
| 2025-01-24 | CORZ | Sale | 25,277 @ $16.24 | $410K | −1.2% of holding | 2,023,423 | Form 4 |
| 2025-01-03 | CORZ | Sale | 2,949 @ $14.57 | $43K | −0.1% of holding | 2,048,700 | Form 4 |
| 2025-01-02 | CORZ | Sale | 129,861 @ $14.24 | $1.8M | −6.0% of holding | 2,051,649 | Form 4 |
21 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-09 | CORZ | Gift | 95,000 | 422,133 | Form 4 |
| 2026-08-17 | CORZ | Withheld for tax | 11,205 | 1,947,896 | Form 4 |
| 2026-07-16 | CORZ | Withheld for tax | 4,325 | 2,009,101 | Form 4 |
| 2026-06-30 | CORZ | Withheld for tax | 5,469 | 2,033,426 | Form 4 |
| 2026-05-20 | CORZ | Award / grant | 138,547 | 2,098,895 | Form 4 |
| 2026-04-16 | CORZ | Withheld for tax | 16,741 | 2,010,348 | Form 4 |
| 2026-03-31 | CORZ | Withheld for tax | 97,652 | 2,057,089 | Form 4 |
| 2026-03-31 | CORZ | Award / grant | 216,734 | 2,154,741 | Form 4 |
| 2025-12-31 | CORZ | Withheld for tax | 139,873 | 1,938,007 | Form 4 |
| 2025-12-31 | CORZ | Award / grant | 55,758 | 2,077,880 | Form 4 |
| 2025-12-09 | CORZ | Gift | 20,000 | 517,133 | Form 4 |
| 2025-09-30 | CORZ | Withheld for tax | 8,228 | 2,021,428 | Form 4 |
| 2025-08-15 | CORZ | Withheld for tax | 11,805 | 2,029,656 | Form 4 |
| 2025-07-01 | CORZ | Withheld for tax | 8,228 | 2,041,461 | Form 4 |
| 2025-04-28 | CORZ | Award / grant | 194,600 | 2,210,102 | Form 4 |
| 2024-12-31 | CORZ | Award / grant | 55,758 | 2,181,510 | Form 4 |
| 2024-12-12 | CORZ | Exercise | 267,301 | 2,125,752 | Form 4 |
| 2024-12-12 | CORZ | Exercise | 267,301 | 0 | Form 4 |
| 2024-12-12 | CORZ | Gift | 20,000 | 537,133 | Form 4 |
| 2024-12-05 | CORZ | Exercise | 196,977 | 1,858,451 | Form 4 |
| 2024-12-05 | CORZ | Exercise | 196,977 | 267,301 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.