<SEC-DOCUMENT>0001258897-18-001075-index.html : 20180209 <SEC-HEADER>0001258897-18-001075.hdr.sgml : 20180209 <ACCEPTANCE-DATETIME>20180209082949 ACCESSION NUMBER: 0001258897-18-001075 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20180209 DATE AS OF CHANGE: 20180209 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: LYDALL INC /DE/ CENTRAL INDEX KEY: 0000060977 STANDARD INDUSTRIAL CLASSIFICATION: MOTOR VEHICLE PARTS & ACCESSORIES [3714] IRS NUMBER: 060865505 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-19777 FILM NUMBER: 18587997 BUSINESS ADDRESS: STREET 1: ONE COLONIAL RD STREET 2: P O BOX 151 CITY: MANCHESTER STATE: CT ZIP: 06045-0151 BUSINESS PHONE: 2036461233 FORMER COMPANY: FORMER CONFORMED NAME: COLONIAL BOARD CO DATE OF NAME CHANGE: 19700115 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: DIMENSIONAL FUND ADVISORS LP CENTRAL INDEX KEY: 0000354204 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 222370029 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 6300 BEE CAVE ROAD STREET 2: BUILDING ONE CITY: AUSTIN STATE: TX ZIP: 78746 BUSINESS PHONE: (512) 306-7400 MAIL ADDRESS: STREET 1: 6300 BEE CAVE ROAD STREET 2: BUILDING ONE CITY: AUSTIN STATE: TX ZIP: 78746 FORMER COMPANY: FORMER CONFORMED NAME: DIMENSIONAL FUND ADVISORS INC DATE OF NAME CHANGE: 19920929 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>dfs221.htm <DESCRIPTION>SCHEDULE 13G/A <TEXT> Document 1 - file: dfs221.htm
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