| SC 13G/A | 2015-01-26 | BlackRock Inc. | LYDALL INC /DE/ | 1,261,228 | 7.4% | EDGAR |
| SC 13G/A | 2014-06-06 | VAN DEN BERG MANAGEMENT INC/TX | LYDALL INC /DE/ | 290,041 | 1.7% | EDGAR |
| SC 13G/A | 2014-02-13 | VAN DEN BERG MANAGEMENT INC/TX | LYDALL INC /DE/ | 1,173,118 | 7.0% | EDGAR |
| SC 13G/A | 2014-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | LYDALL INC /DE/ | 1,685,770 | 10.0% | EDGAR |
| SC 13G/A | 2014-02-10 | DIMENSIONAL FUND ADVISORS LP | LYDALL INC /DE/ | 1,434,474 | 8.5% | EDGAR |
| SC 13G/A | 2014-01-29 | BlackRock Inc. | LYDALL INC /DE/ | 1,312,222 | 7.8% | EDGAR |
| SC 13G/A | 2013-02-14 | VAN DEN BERG MANAGEMENT INC/TX | LYDALL INC /DE/ | 1,308,287 | 7.7% | EDGAR |
| SC 13G/A | 2013-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | LYDALL INC /DE/ | 1,657,510 | 9.7% | EDGAR |
| SC 13G/A | 2013-02-11 | DIMENSIONAL FUND ADVISORS LP | LYDALL INC /DE/ | 1,439,073 | 8.5% | EDGAR |
| SC 13G/A | 2013-02-05 | BlackRock Inc. | LYDALL INC /DE/ | 1,101,694 | 6.5% | EDGAR |
| SC 13G/A | 2013-01-30 | ROYCE & ASSOCIATES LLC | LYDALL INC /DE/ | 736,010 | 4.3% | EDGAR |
| SC 13G/A | 2012-02-14 | DIMENSIONAL FUND ADVISORS LP | LYDALL INC /DE/ | 1,455,284 | 8.5% | EDGAR |
| SC 13G/A | 2012-02-14 | VAN DEN BERG MANAGEMENT INC/TX | LYDALL INC /DE/ | 1,336,354 | 7.8% | EDGAR |
| SC 13G/A | 2012-02-13 | BlackRock Inc. | LYDALL INC /DE/ | 1,120,360 | 6.5% | EDGAR |
| SC 13G/A | 2012-02-09 | PRICE T ROWE ASSOCIATES INC /MD/ | LYDALL INC /DE/ | 1,656,320 | 9.6% | EDGAR |
| SC 13G/A | 2012-01-18 | ROYCE & ASSOCIATES LLC | LYDALL INC /DE/ | 1,136,510 | 6.6% | EDGAR |
| SC 13G/A | 2011-02-11 | DIMENSIONAL FUND ADVISORS LP | LYDALL INC /DE/ | 1,431,672 | 8.4% | EDGAR |
| SC 13G/A | 2011-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | LYDALL INC /DE/ | 1,656,720 | 9.7% | EDGAR |
| SC 13G | 2011-02-07 | BlackRock Inc. | LYDALL INC /DE/ | 1,144,146 | 6.7% | EDGAR |
| SC 13G/A | 2011-01-14 | ROYCE & ASSOCIATES LLC | LYDALL INC /DE/ | 1,279,473 | 7.5% | EDGAR |