| UNITED STATES | |
| SECURITIES AND EXCHANGE COMMISSION | |
| Washington, D.C. 20549 | |
| Notice of Effectiveness | |
| Effectiveness Date: | February 6, 2019 |
| Accession Number: | 0001140361-19-002252 |
| Submission Type: | POS AM |
| CIK:0000726514Company Name:ELECTRO SCIENTIFIC INDUSTRIES INCFile Number:033-58292 | |