Aegion Corp

Certification of termination of registration of a class of securities (Section 12(b))

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

2.01,3.01,3.03,5.01,5.02,5.03,8.01,9.01

5.07

General form for quarterly reports under Section 13 or 15(d)

8.01

7.01,9.01

Additional Information for Proxy Statement/ Votes

Required Information in Proxy Statement

1.01,8.01,9.01

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

No description available

8.01,9.01

Additional Information for Proxy Statement/ Votes

1.01,8.01,9.01

1.01,8.01,9.01

Additional Information for Proxy Statement/ Votes

No description available

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

8.01,9.01

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

2.02,9.01

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

1.01,9.01

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

8.01,9.01

2.05,2.06,5.02,7.01,9.01

1.01,7.01,9.01

General form for quarterly reports under Section 13 or 15(d)

2.02,9.01

7.01,9.01

Other Events

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

5.02,7.01,9.01

Specialized Disclosure Report

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

No description available

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

General form for quarterly reports under Section 13 or 15(d)

No description available

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Specialized Disclosure Report

No description available

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

WRIGHT PHILLIP D

SMITH MORRIS RICHARD

Gordon Charles R

Menghini Mark

MORRIS DAVID F

Young Kenneth L

Ballintyn Rhonda Germany

Cuskley Stephanie A

CORTINOVIS STEPHEN P

GALVIN WALTER J

Heggemann John

GALVIN WALTER J

Menghini Mark

GALVIN WALTER J

WRIGHT PHILLIP D

Gordon Charles R

Menghini Mark

Young Kenneth L

Heggemann John