Insider · CIK 0001835547
Vivienne Schiffer
Files at GLDD (Great Lakes Dredge & Dock CORP). First filing -, latest -.
In brief
Vivienne Schiffer files SEC Form 4 as officer at GLDD (Great Lakes Dredge & Dock CORP). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; Vivienne Schiffer has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 24 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Apr 1, 2026 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +28,945 | - | - | 144,817 | Apr 1, 2026 |
| Apr 1, 2026 | GLDD Great Lakes Dredge & Dock CORP | UTender of shares Common Stock | -144,817 | - | - | 0 | Apr 1, 2026 |
| May 8, 2025 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +18,035 | - | - | 82,181 | Mar 25, 2026 |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -2,060 | $16.93 | $35k | 99,270 | Mar 18, 2026 |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +14,213 | - | - | 113,483 | Mar 18, 2026 |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -3,461 | $16.93 | $59k | 110,022 | Mar 18, 2026 |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -2,058 | $16.93 | $35k | 107,964 | Mar 18, 2026 |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +10,454 | - | - | 118,418 | Mar 18, 2026 |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -2,546 | $16.93 | $43k | 115,872 | Mar 18, 2026 |
| Feb 23, 2026 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +19,149 | - | - | 101,330 | Feb 25, 2026 |
| May 8, 2025 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +18,035 | - | - | 82,181 | May 12, 2025 |
| May 5, 2025 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -1,070 | $9.54 | $10k | 64,829 | May 7, 2025 |
| May 5, 2025 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -683 | $9.54 | $6,516 | 64,146 | May 7, 2025 |
| Mar 17, 2025 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -1,864 | $8.70 | $16k | 48,681 | Mar 18, 2025 |
| Mar 17, 2025 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +14,043 | - | - | 62,724 | Mar 18, 2025 |
| Mar 17, 2025 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -3,420 | $8.70 | $30k | 59,304 | Mar 18, 2025 |
| Mar 17, 2025 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -1,274 | $8.70 | $11k | 58,030 | Mar 18, 2025 |
| Mar 17, 2025 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +10,402 | - | - | 68,432 | Mar 18, 2025 |
| Mar 17, 2025 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -2,533 | $8.70 | $22k | 65,899 | Mar 18, 2025 |
| Mar 15, 2024 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +7,752 | - | - | 41,994 | Mar 19, 2024 |
| Mar 15, 2024 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -3,051 | $8.62 | $26k | 38,943 | Mar 19, 2024 |
| Mar 15, 2024 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -3,012 | $8.62 | $26k | 35,931 | Mar 19, 2024 |
| Mar 15, 2024 | GLDD Great Lakes Dredge & Dock CORP | AGrant or award Common Stock | +15,684 | - | - | 51,615 | Mar 19, 2024 |
| Mar 5, 2024 | GLDD Great Lakes Dredge & Dock CORP | FTax withholding Common Stock | -895 | $8.70 | $7,787 | 34,242 | Mar 6, 2024 |
Questions about Vivienne Schiffer
Answered from the filings on this page, as of the latest one.
Is Vivienne Schiffer buying or selling?
Vivienne Schiffer has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Vivienne Schiffer's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Vivienne Schiffer has 0.
Where does Vivienne Schiffer file Form 4?
Vivienne Schiffer has filed Form 4 at GLDD (Great Lakes Dredge & Dock CORP) as SVP, CLO, CCO & Corp Secretary. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.