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ALTO        0000778164    
Filing Date Form Type Description Document
2020-12-14 4 OWNERSHIP DOCUMENT View Document
2020-12-14 4 OWNERSHIP DOCUMENT View Document
2020-12-03 4 View Document
2020-12-01 4 OWNERSHIP DOCUMENT View Document
2020-11-30 424B3 FINAL PROSPECTUS View Document
2020-11-27 EFFECT View Document
2020-11-24 CORRESP View Document
2020-11-24 UPLOAD View Document
2020-11-20 S-3 REGISTRATION STATEMENT View Document
2020-11-18 S-8 REGISTRATION STATEMENT View Document
2020-11-18 8-K CURRENT REPORT View Document
2020-11-16 10-Q QUARTERLY REPORT View Document
2020-11-09 8-K CURRENT REPORT View Document
2020-11-09 8-K CURRENT REPORT View Document
2020-10-28 8-K CURRENT REPORT View Document
2020-10-28 SC 13G SC 13G View Document
2020-10-26 8-K CURRENT REPORT View Document
2020-10-26 424B5 PROSPECTUS SUPPLEMENT View Document
2020-10-23 424B5 PROSPECTUS SUPPLEMENT View Document
2020-10-23 8-K CURRENT REPORT View Document
2020-10-16 4 OWNERSHIP DOCUMENT View Document
2020-10-09 SC 13G/A View Document
2020-10-05 8-K FORM 8-K View Document
2020-09-25 DEFA14A DEFINITIVE ADDITIONAL MATERIALS View Document
2020-09-25 DEF 14A DEFINITIVE PROXY STATEMENT View Document
2020-08-27 4 View Document
2020-08-27 4 View Document
2020-08-27 4 View Document
2020-08-20 4 OWNERSHIPDOCUMENT View Document
2020-08-20 4 View Document
2020-08-17 4 View Document
2020-08-13 8-K CURRENT REPORT View Document
2020-08-13 424B5 PROSPECTUS SUPPLEMENT View Document
2020-08-13 10-Q QUARTERLY REPORT View Document
2020-08-11 8-K CURRENT REPORT View Document
2020-08-10 8-K CURRENT REPORT View Document
2020-08-07 8-K CURRENT REPORT View Document
2020-07-28 4 OWNERSHIP DOCUMENT View Document
2020-07-28 4 OWNERSHIP DOCUMENT View Document
2020-07-28 4 OWNERSHIP DOCUMENT View Document
2020-07-28 4 OWNERSHIP DOCUMENT View Document
2020-07-28 4 OWNERSHIP DOCUMENT View Document
2020-07-20 DEFA14A DEFINITIVE ADDITIONAL MATERIALS View Document
2020-07-20 DEF 14A DEFINITIVE PROXY STATEMENT View Document
2020-07-09 4 View Document
2020-07-08 PRE 14A PRELIMINARY PROXY STATEMENT View Document
2020-07-01 EFFECT View Document
2020-07-01 CORRESP View Document
2020-06-25 CORRESP View Document
2020-06-25 S-3/A AMENDMENT NO. 1 TO REGISTRATION STATEMENT View Document
2020-06-16 4 View Document
2020-06-15 UPLOAD View Document
2020-06-09 4 View Document
2020-06-04 S-3 REGISTRATION STATEMENT View Document
2020-05-29 8-K CURRENT REPORT View Document
2020-05-14 10-Q QUARTERLY REPORT View Document
2020-05-12 8-K CURRENT REPORT View Document
2020-05-11 8-K CURRENT REPORT View Document
2020-05-08 SC 13G/A View Document
2020-05-07 8-K CURRENT REPORT View Document
2020-04-29 10-K/A AMENDMENT NO. 1 TO FORM 10-K View Document
2020-04-23 8-K CURRENT REPORT View Document
2020-04-21 8-K CURRENT REPORT View Document
2020-04-03 4 OWNERSHIP DOCUMENT View Document
2020-04-03 4 View Document
2020-04-03 4 View Document
2020-04-03 4 OWNERSHIP DOCUMENT View Document
2020-04-03 4 View Document
2020-04-03 4 View Document
2020-03-30 10-K ANNUAL REPORT View Document
2020-03-26 3 View Document
2020-03-26 8-K CURRENT REPORT View Document
2020-03-12 8-K CURRENT REPORT View Document
2020-03-05 8-K CURRENT REPORT View Document
2020-02-14 SC 13G/A View Document
2020-02-12 SC 13G View Document
2020-02-12 SC 13G/A SCHEDULE 13G/A View Document
2020-02-10 SC 13G View Document
2020-02-05 EFFECT View Document
2020-02-05 424B3 FINAL PROSPECTUS View Document
2020-02-03 CORRESP View Document
2020-02-03 S-1/A AMENDMENT NO. 1 TO REGISTRATION STATEMENT View Document
2020-01-28 UPLOAD View Document
2020-01-24 8-K/A CURRENT REPORT View Document
2020-01-22 8-K CURRENT REPORT View Document
2020-01-21 S-1 REGISTRATION STATEMENT View Document
2020-01-03 8-K CURRENT REPORT View Document
2019-12-26 8-K CURRENT REPORT View Document
2019-12-26 8-K CURRENT REPORT View Document
2019-11-19 8-K CURRENT REPORT View Document
2019-11-19 4 View Document
2019-11-19 4 View Document
2019-11-19 4 View Document
2019-11-19 4 View Document
2019-11-19 4 View Document
2019-11-19 4 View Document
2019-11-19 4 View Document
2019-11-18 3 View Document
2019-11-15 3 View Document
2019-11-12 10-Q QUARTERLY REPORT View Document

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