Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001172661-20-000694
Filing Date
2020-02-14
Accepted
2020-02-14 13:04:21
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G HOLDINGS REPORT AMENDMENT frontier-ati123119a2.htm SC 13G/A 54352
  Complete submission text file 0001172661-20-000694.txt   55720
Mailing Address 100 SIX PPG PLACE PITTSBURGH PA 15222
Business Address 1000 SIX PPG PLACE PITTSBURGH PA 15222 4123942800
ALLEGHENY TECHNOLOGIES INC (Subject) CIK: 0001018963 (see all company filings)

EIN.: 251792394 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-46715 | Film No.: 20617177
SIC: 3317 Steel Pipe & Tubes

Mailing Address
Business Address 99 SUMMER STREET BOSTON MA 02110
FRONTIER CAPITAL MANAGEMENT CO LLC (Filed by) CIK: 0001216488 (see all company filings)

EIN.: 043492668 | State of Incorp.: DE
Type: SC 13G/A