ISCO INTERNATIONAL INC 4

4 · ISCO INTERNATIONAL INC · Filed Apr 26, 2005

Form 4

Period: 2005-04-22

DirectorChief Opr Off & Chief Tech Off

Transactions

Exercise/Conversion
Stock Option (right to buy)
2005-04-25−300,000→ 462,499 total
Exercise: $0.11Exp: 2013-01-02→ Common Stock (900,000 underlying)
Sale
Common Stock
2005-04-22$0.30/sh−1,124,999$341,775→ 32,000 total
Sale
Common Stock
2005-04-22$0.30/sh−75,001$22,785→ 32,000 total
Exercise/Conversion
Common Stock
2005-04-25$0.11/sh+300,000$33,000→ 332,000 total
Exercise/Conversion
Common Stock
2005-04-22$0.14/sh+1,124,999$157,500→ 1,156,999 total
Sale
Common Stock
2005-04-25$0.29/sh−300,000$88,080→ 32,000 total
Exercise/Conversion
Stock Option (right to buy)
2005-04-22−75,001→ 762,499 total
Exercise: $0.11Exp: 2013-01-02→ Common Stock (900,000 underlying)
Exercise/Conversion
Common Stock
2005-04-22$0.11/sh+75,001$8,250→ 107,001 total
Exercise/Conversion
Stock Option (right to buy)
2005-04-22−1,124,999→ 675,001 total
Exercise: $0.14Exp: 2014-01-21→ Common Stock (1,800,000 underlying)

Footnotes (3)

[F1]This option grant was fully vested as of 01/02/04.
[F2]These shares represent a portion of an option grant for which there was no purchase price.
[F3]This option vests ratably on a monthly basis over a two year period from the date of grant (01/21/04).

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