LaVoy Kathleen Mackie 4

4 · Great Lakes Dredge & Dock CORP · Filed Dec 15, 2020

Form 4

Period: 2020-12-11

SVP & Chief Legal Officer

Transactions

Sale
Common Stock
[F1]
2020-12-11$11.41/sh−10,000$114,068→ 119,687 total
Exercise/Conversion
Common Stock
[F2]
2020-12-11$7.56/sh+6,614$50,002→ 126,301 total
Sale
Common Stock
[F3]
2020-12-11$11.42/sh−6,614$75,515→ 125,702 total
Exercise/Conversion
Common Stock
[F4]
2020-12-11$7.62/sh+6,015$45,834→ 132,316 total
Sale
Common Stock
[F5]
2020-12-11$11.41/sh−6,015$68,613→ 119,687 total
Exercise/Conversion
Employee Stock Option
[F2][F6]
2020-12-11$7.56/sh−6,614$50,002→ 0 total
Exercise: $7.56Exp: 2023-05-07→ Common Stock (6,614 underlying)
Exercise/Conversion
Employee Stock Option
[F4][F7]
2020-12-11$7.62/sh−6,015$45,834→ 0 total
Exercise: $7.62Exp: 2024-05-09→ Common Stock (6,015 underlying)

Footnotes (7)

[F1]Represents the weighted average price. The shares were sold in multiple transactions ranging from $11.39 to $11.43, inclusive. Upon request by the Commission staff, the issuer or security holder of the issuer, the reporting person will provide information regarding the number of shares disposed of at each separate price.
[F2]Represents an exercise of vested employee stock options granted on May 7, 2013 under the Great Lakes Dredge & Dock Corporation 2007 Long-Term Incentive Plan.
[F3]Represents the weighted average price. The shares were sold in multiple transactions ranging from $11.41 to $11.425 inclusive. Upon request by the Commission staff, the issuer or security holder of the issuer, the reporting person will provide information regarding the number of shares disposed of at each separate price.
[F4]Represents an exercise of vested employee stock options granted on May 9, 2014 under the Great Lakes Dredge & Dock Corporation 2007 Long-Term Incentive Plan.
[F5]Represents the weighted average price. The shares were sold in multiple transactions ranging from $11.40 to $11.411, inclusive. Upon request by the Commission staff, the issuer or security holder of the issuer, the reporting person will provide information regarding the number of shares disposed of at each separate price.
[F6]The options vested in three equal installments beginning May 7, 2014.
[F7]The options vested in three equal installments beginning May 9, 2015.

Signature

Kathleen M. LaVoy|2020-12-15

Documents

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