| 2010-06-15 | NORTH AMERICAN GALVANIZING & COATINGS INC | J | −124K sh | — | — | 0 |
| 2010-06-15 | NORTH AMERICAN GALVANIZING & COATINGS INC | J | +124K sh | — | — | 124,302 |
| 2010-06-14 | NORTH AMERICAN GALVANIZING & COATINGS INC | U | +344K sh | $7.50 | +$2.58M | 166,833 |
| 2010-06-14 | NORTH AMERICAN GALVANIZING & COATINGS INC | F | −44.1K sh | $7.50 | −$331K | 122,706 |
| 2010-06-14 | NORTH AMERICAN GALVANIZING & COATINGS INC | U | −344K sh | $7.50 | −$2.58M | 166,833 |
| 2010-06-14 | NORTH AMERICAN GALVANIZING & COATINGS INC | F | −44.1K sh | $7.50 | −$331K | 122,706 |
| 2010-06-14 | NORTH AMERICAN GALVANIZING & COATINGS INC | U | +39.4K sh | $7.50 | +$296K | 0 |
| 2010-06-14 | NORTH AMERICAN GALVANIZING & COATINGS INC | U | +344K sh | $7.50 | +$2.58M | 166,833 |
| 2010-06-14 | NORTH AMERICAN GALVANIZING & COATINGS INC | F | −44.1K sh | $7.50 | −$331K | 122,706 |
| 2010-04-01 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +4,529 sh | — | — | 124,302 |
| 2010-02-18 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +33.5K sh | — | — | 510,854 |
| 2010-01-04 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +5,198 sh | — | — | 119,773 |
| 2009-12-31 | NORTH AMERICAN GALVANIZING & COATINGS INC | J | +5,623 sh | — | — | 42,731 |
| 2009-10-01 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +3,785 sh | — | — | 114,575 |
| 2009-08-26 | NORTH AMERICAN GALVANIZING & COATINGS INC | M | +100K sh | $1.05 | +$105K | 477,354 |
| 2009-08-26 | NORTH AMERICAN GALVANIZING & COATINGS INC | X | −100K sh | $1.05 | −$105K | 450,000 |
| 2009-08-21 | NORTH AMERICAN GALVANIZING & COATINGS INC | M | +19.3K sh | $1.25 | +$24.2K | 396,688 |
| 2009-08-21 | NORTH AMERICAN GALVANIZING & COATINGS INC | S | ▼−19.3K sh | $5.23 | ▼−$101K | 377,354 |
| 2009-08-20 | NORTH AMERICAN GALVANIZING & COATINGS INC | M | +15.3K sh | $1.25 | +$19.2K | 392,698 |
| 2009-08-20 | NORTH AMERICAN GALVANIZING & COATINGS INC | S | ▼−15.3K sh | $5.12 | ▼−$78.6K | 377,354 |
| 2009-08-19 | NORTH AMERICAN GALVANIZING & COATINGS INC | M | +15.3K sh | $1.25 | +$19.2K | 392,676 |
| 2009-08-19 | NORTH AMERICAN GALVANIZING & COATINGS INC | S | ▼−15.3K sh | $5.38 | ▼−$82.4K | 377,354 |
| 2009-08-19 | NORTH AMERICAN GALVANIZING & COATINGS INC | X | −50K sh | $1.25 | −$62.5K | 550,000 |
| 2009-07-01 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +2,591 sh | — | — | 110,790 |
| 2009-04-01 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +5,262 sh | — | — | 108,199 |
| 2009-01-20 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +66.7K sh | — | — | 337,353 |
| 2009-01-20 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +66.7K sh | — | — | 377,354 |
| 2009-01-02 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +4,150 sh | — | — | 102,937 |
| 2008-12-31 | NORTH AMERICAN GALVANIZING & COATINGS INC | J | +9,897 sh | — | — | 37,108 |
| 2008-01-02 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +2,466 sh | — | — | 67,526 |
| 2007-10-01 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +2,359 sh | — | — | 65,060 |
| 2007-07-02 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +1,663 sh | — | — | 62,701 |
| 2007-05-25 | NORTH AMERICAN GALVANIZING & COATINGS INC | S | ▼−43.3K sh | $15.20 | ▼−$657K | 135,205 |
| 2007-05-24 | NORTH AMERICAN GALVANIZING & COATINGS INC | S | ▼−36.7K sh | $15.07 | ▼−$554K | 178,464 |
| 2007-05-04 | NORTH AMERICAN GALVANIZING & COATINGS INC | M | +7,325 sh | $1.99 | +$14.6K | 225,442 |
| 2007-05-04 | NORTH AMERICAN GALVANIZING & COATINGS INC | S | ▼−7,325 sh | $12.46 | ▼−$91.3K | 218,117 |
| 2007-05-04 | NORTH AMERICAN GALVANIZING & COATINGS INC | X | −3,750 sh | $1.50 | −$5,625 | 303,575 |
| 2007-05-04 | NORTH AMERICAN GALVANIZING & COATINGS INC | X | −3,575 sh | $2.50 | −$8,937.5 | 300,000 |
| 2006-10-02 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +2,939 sh | — | — | 253,113 |
| 2006-07-03 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +3,388 sh | — | — | 32,057 |
| 2006-07-03 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +3,388 sh | — | — | 220,364 |
| 2004-12-31 | NORTH AMERICAN GALVANIZING & COATINGS INC | A | +1,704 sh | — | — | 14,394 |