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AMPH        0001297184    
Filing Date Form Type Description Document
2020-06-09 8-K 8-K View Document
2020-06-08 4 4 View Document
2020-06-05 4 4 View Document
2020-06-02 4 4 View Document
2020-05-28 4 4 View Document
2020-05-27 4 4 View Document
2020-05-22 4 4 View Document
2020-05-18 4 4 View Document
2020-05-18 4 4 View Document
2020-05-14 4 4 View Document
2020-05-14 4 4 View Document
2020-05-14 4 4 View Document
2020-05-11 10-Q 10-Q View Document
2020-05-07 8-K 8-K View Document
2020-05-05 4 4 View Document
2020-04-15 DEFA14A DEFA14A View Document
2020-04-15 DEF 14A DEF 14A View Document
2020-04-14 8-K/A 8-K/A View Document
2020-04-13 8-K 8-K View Document
2020-04-02 4 4 View Document
2020-03-18 4 4 View Document
2020-03-18 4 4 View Document
2020-03-18 4 4 View Document
2020-03-18 4 4 View Document
2020-03-18 4 4 View Document
2020-03-17 4 4 View Document
2020-03-17 4 4 View Document
2020-03-17 4 4 View Document
2020-03-17 4 4 View Document
2020-03-17 4 4 View Document
2020-03-16 S-8 S-8 View Document
2020-03-16 10-K 10-K View Document
2020-03-12 8-K 8-K View Document
2020-03-03 4 4 View Document
2020-02-14 SC 13G/A SC 13G/A View Document
2020-02-11 SC 13G SCHEDULE 13G View Document
2020-02-07 4 4 View Document
2020-02-04 4 4 View Document
2020-02-04 SC 13G/A View Document
2020-01-23 4 4 View Document
2020-01-10 4 4 View Document
2020-01-03 4 4 View Document
2019-12-20 4 4 View Document
2019-12-04 4 4 View Document
2019-11-08 10-Q 10-Q View Document
2019-11-07 8-K 8-K View Document
2019-11-05 4 4 View Document
2019-10-03 4 4 View Document
2019-09-20 4 4 View Document
2019-09-18 4 4 View Document
2019-09-17 4 4 View Document
2019-09-17 4 4 View Document
2019-09-12 4 4 View Document
2019-09-09 4 4 View Document
2019-08-27 4 4 View Document
2019-08-16 4 4 View Document
2019-08-15 4 4 View Document
2019-08-14 4 4 View Document
2019-08-09 10-Q 10-Q View Document
2019-08-07 8-K 8-K View Document
2019-07-12 4 4 View Document
2019-06-19 8-K 8-K View Document
2019-06-17 4 4 View Document
2019-06-17 4 4 View Document
2019-06-13 4 4 View Document
2019-06-13 4 4 View Document
2019-06-13 4 4 View Document
2019-06-13 4 4 View Document
2019-06-13 4 4 View Document
2019-06-13 4 4 View Document
2019-06-13 3 3 View Document
2019-06-13 8-K FORM 8-K View Document
2019-06-10 4 4 View Document
2019-05-10 10-Q 10-Q View Document
2019-05-09 8-K 8-K View Document
2019-05-07 4 4 View Document
2019-05-02 4 4 View Document
2019-04-18 DEFA14A DEFA14A View Document
2019-04-18 DEF 14A DEF 14A View Document
2019-04-18 4 4 View Document
2019-03-28 4 4 View Document
2019-03-27 4 4 View Document
2019-03-27 4 4 View Document
2019-03-27 4 4 View Document
2019-03-19 4 4 View Document
2019-03-19 4 4 View Document
2019-03-18 4 4 View Document
2019-03-18 4 4 View Document
2019-03-18 4 4 View Document
2019-03-15 S-8 S-8 View Document
2019-03-15 10-K 10-K View Document
2019-03-15 DEFA14A DEFA14A View Document
2019-03-14 8-K 8-K View Document
2019-03-12 8-K 8-K View Document
2019-03-06 4 4 View Document
2019-03-04 4 4 View Document
2019-03-04 4/A 4/A View Document
2019-03-01 4 4 View Document
2019-02-15 4 4 View Document
2019-02-15 4 4 View Document

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