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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0000354204-23-001493
Filing Date
2023-02-10
Accepted
2023-02-10 14:42:26
Documents
1

Document Format Files

Seq Description Document Type Size
1 SEC SCHEDULE 13G SEC13G_Filing.htm SC 13G/A 17671
  Complete submission text file 0000354204-23-001493.txt   19426
Mailing Address 6300 BEE CAVE ROAD BUILDING ONE AUSTIN TX 78746
Business Address 6300 BEE CAVE ROAD BUILDING ONE AUSTIN TX 78746 (512) 306-7400
DIMENSIONAL FUND ADVISORS LP (Filed by) CIK: 0000354204 (see all company filings)

IRS No.: 222370029 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000

Mailing Address 131 SOUTH CLARK DRIVE TEMPE AZ 85288
Business Address 131 SOUTH CLARK DRIVE TEMPE AZ 85288 4809675146
AMTECH SYSTEMS INC (Subject) CIK: 0000720500 (see all company filings)

IRS No.: 860411215 | State of Incorp.: AZ | Fiscal Year End: 0930
Type: SC 13G/A | Act: 34 | File No.: 005-39482 | Film No.: 23610822
SIC: 3559 Special Industry Machinery, NEC