OTC : AMPE
$0 (0.0%)
%
change: 0.0 | last:
change: 0.0 | last:
change: 0.0 | last:
change: 0.0 | last:
change: 0.0 | last:
-
-
change: 0.0 | last:
-
| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2022-07-08 | (1) BlackRock, Inc. | 4.7M | 2.10% |
| 2022-04-29 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 5.91M | 2.60% |
| 2022-04-29 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 4.9M | 2.16% |
| 2022-04-29 | Bruce E. Terker | 14.4M | 6.34% |
| 2022-04-29 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 1M | 0.44% |
| 2022-04-29 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 2.59M | 1.14% |
| 2022-02-04 | (1) BlackRock, Inc. | 13.93M | 6.20% |
| 2021-01-20 | Bruce E. Terker | 11.53M | 5.96% |
| 2021-01-20 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 1M | 0.52% |
| 2021-01-20 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 2.34M | 1.21% |
| 2021-01-20 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 3.27M | 1.69% |
| 2021-01-20 | IDENTIFICATION NOS. OF ABOVE PERSONS ( | 4.91M | 2.54% |
| 2020-01-23 | Empery Tax Efficient II, LP | 1.83M | 1.15% |
| 2019-06-20 | Empery Asset Management, LP | 2.83M | 8.84% |
| 2019-06-20 | Ryan M. Lane | 2.83M | 8.84% |
| 2019-06-20 | Martin D. Hoe | 2.83M | 8.84% |
| 2019-06-20 | Empery Tax Efficient II, LP | 882.56K | 5.40% |
| 2019-03-08 | (1) BlackRock, Inc. | 5.31M | 4.97% |
| 2019-02-14 | Heights Capital Management, Inc. | 5.6M | 4.90% |
| 2019-02-14 | CVI Investments, Inc. | 5.6M | 4.90% |
| 2019-02-08 | (1) BlackRock, Inc. | 5.45M | 5.10% |
| 2019-02-01 | 2 | 3.62M | 3.26% |
| 2019-02-01 | 2 | 1.66M | 1.50% |
| 2019-02-01 | 2 | 3.27M | 2.95% |
| 2019-02-01 | 2 | 1M | 0.90% |
| 2019-02-01 | 2 | 9.55M | 8.61% |
| 2018-08-17 | Heights Capital Management, Inc. | 6.5M | 6.10% |
| 2018-08-17 | CVI Investments, Inc. | 6.5M | 6.10% |
| 2018-08-10 | Carol G. Frankenfield | 1.21M | 1.40% |
| 2018-08-10 | Amir L. Ecker | 1.21M | 1.40% |
| 2018-08-10 | ( | 1.21M | 1.40% |
| 2018-02-13 | ( | 4.68M | 5.80% |
| 2018-02-13 | Carol G. Frankenfield | 4.68M | 5.80% |
| 2018-02-13 | Amir L. Ecker | 4.68M | 5.80% |
| 2018-01-09 | 2 | 977.33K | 1.22% |
| 2018-01-09 | 2 | 2.12M | 2.65% |
| 2018-01-09 | 2 | 1M | 1.25% |
| 2018-01-09 | 2 | 5.26M | 6.57% |
| 2018-01-09 | 2 | 1.16M | 1.45% |
| 2017-10-27 | Amir L. Ecker | 4.15M | 5.50% |
| 2017-10-27 | ( | 4.15M | 5.50% |
| 2017-10-27 | Carol G. Frankenfield | 4.15M | 5.50% |
| 2017-07-10 | (1) BlackRock, Inc. | 1.21M | 1.80% |
| 2017-06-14 | 2 | 1.79M | 2.63% |
| 2017-06-14 | 2 | 958.33K | 1.41% |
| 2017-06-14 | 2 | 4.47M | 6.58% |
| 2017-06-14 | 2 | 833.33K | 1.23% |
| 2017-06-14 | 2 | 890K | 1.31% |
| 2017-02-10 | Heights Capital Management, Inc. | 2.88M | 4.90% |
| 2017-02-10 | CVI Investments, Inc. | 2.88M | 4.90% |
| 2017-01-30 | (1) BlackRock, Inc. | 3.3M | 5.80% |
| 2016-09-07 | Heights Capital Management, Inc. | 5M | 8.80% |
| 2016-09-07 | CVI Investments, Inc. | 5M | 8.80% |
| 2016-07-22 | ( | 2.28M | 4.40% |
| 2016-07-22 | Amir L. Ecker | 2.28M | 4.40% |
| 2016-07-22 | Carol G. Frankenfield | 2.28M | 4.40% |
| 2016-03-01 | JCP Investment Partnership, LP | 269.8K | 5.50% |
| 2016-01-28 | Carol G. Frankenfield | 3.69M | 7.10% |
| 2016-01-28 | ( | 3.69M | 7.10% |
| 2016-01-28 | Amir L. Ecker | 3.69M | 7.10% |
| 2015-07-10 | (1) BlackRock, Inc. | 1.43M | 2.80% |
| 2015-02-17 | Europa International, Inc. | 3.39M | 6.50% |
| 2015-02-17 | Fred Knoll | 3.39M | 6.50% |
| 2015-02-17 | Knoll Capital Management, LP | 3.39M | 6.50% |
| 2015-02-02 | (1) BlackRock, Inc. | 2.98M | 5.70% |
| 2014-02-14 | Knoll Capital Management, LP | 2.55M | 6.05% |
| 2014-02-14 | Fred Knoll | 2.55M | 6.05% |
| 2014-02-14 | Europa International, Inc. | 2.55M | 6.05% |
| 2013-05-08 | ( | 2.36M | 6.40% |
| 2013-05-08 | Amir L. Ecker | 2.36M | 6.40% |
| 2013-05-08 | Carol G. Frankenfield | 2.36M | 6.40% |
| 2013-01-29 | Carol G. Frankenfield | 1.9M | 5.10% |
| 2013-01-29 | Amir L. Ecker | 1.9M | 5.10% |
| 2013-01-29 | 14-1895400) | 1.9M | 5.10% |
| 2011-12-09 | Genesis Capital Management Limited | 1.54M | 5.30% |
| 2011-12-09 | Petrus H. Jacobs | 1.54M | 5.30% |
| 2011-12-09 | Herald Janssen | 1.54M | 5.30% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2023-12-31 | $2.05 | 809K | $1.66M | $4.09M | $274K | -$2.16M |
| 2022-12-31 | $4.60 | 557K | $2.56M | $12.65M | $803K | -$9.29M |
| 2021-12-31 | $171.00 | 664.33K | $113.6M | $33.89M | $1.19M | $80.9M |
| 2020-12-31 | $477.00 | 576.16K | $274.83M | $17.35M | $1.21M | $258.69M |
| 2019-12-31 | $174.00 | 474.03K | $82.48M | $6.53M | $1.47M | $77.42M |
| 2018-12-31 | $117.00 | 244.53K | $28.61M | $7.59M | -$ | $21.02M |
| 2017-12-31 | $348.86 | 217K | $75.7M | $8.21M | -$ | $67.49M |
| 2016-12-31 | $77.14 | 179K | $13.81M | $4.89M | -$ | $8.91M |
| 2015-12-31 | $85.71 | 173.31K | $14.85M | $26.96M | $4.92M | -$7.18M |
| 2014-12-31 | $84.00 | 167.42K | $14.06M | $50.32M | -$ | -$36.26M |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2023-12-31 | $2.05 | 826K | $1.69M | $4.09M | $274K | -$2.12M |
| 2023-09-30 | $3.64 | 804.16K | $2.93M | $6.4M | $362K | -$3.11M |
| 2023-06-30 | $4.60 | 754.7K | $3.47M | $6.95M | $448K | -$3.03M |
| 2023-03-31 | $4.60 | 754.69K | $3.47M | $10.35M | $532K | -$6.35M |
| 2022-12-31 | $4.60 | 753.62K | $3.47M | $12.65M | $803K | -$8.38M |
| 2022-09-30 | $18.00 | 753.62K | $13.57M | $16.95M | $694K | -$2.69M |
| 2022-06-30 | $51.00 | 753.62K | $38.43M | $22.89M | $773K | $16.32M |
| 2022-03-31 | $141.00 | 753.61K | $106.26M | $28.84M | $851K | $78.27M |
| 2021-12-31 | $171.00 | 675.99K | $115.59M | $33.89M | $925K | $82.63M |
| 2021-09-30 | $498.00 | 668.06K | $332.7M | $17.12M | $998K | $316.58M |
| 2021-06-30 | $501.00 | 653.93K | $327.62M | $20.55M | $1.07M | $308.14M |
| 2021-03-31 | $507.00 | 642K | $325.49M | $15.8M | $1.14M | $310.83M |