| Date Filed | Type | Description |
| 08/23/2023 |
SC 13D/A
| Barta Jan reports a 23.7% stake in Groupon, Inc. |
| 08/11/2023 |
13F-NT
| Form 13F-NT - Quarterly report filed by institutional managers, Notice: |
| 05/15/2023 |
13F-NT
| Form 13F-NT - Quarterly report filed by institutional managers, Notice: |
| 03/31/2023 |
SC 13D/A
| Barta Jan reports a 21.9% stake in Groupon, Inc. |
| 02/08/2023 |
13F-NT
| Form 13F-NT - Quarterly report filed by institutional managers, Notice: |
| 12/21/2022 |
SC 13D/A
| Barta Jan reports a 7.8% stake in Dole plc |
| 12/20/2022 |
SC 13D/A
| Barta Jan reports a 22.1% stake in Groupon, Inc. |
| 12/09/2022 |
SC 13D/A
| Barta Jan reports a 5.9% stake in Dole plc |
| 08/29/2022 |
SC 13D
| Barta Jan reports a 5.2% stake in Dole plc |
| 06/13/2022 |
SC 13D/A
| Barta Jan reports a 14.3% stake in Groupon, Inc. |
| 05/25/2022 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 05/11/2022 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 04/28/2022 |
SC 13D/A
| Barta Jan reports a 10% stake in Groupon, Inc. |
| 04/21/2022 |
SC 13D/A
| Barta Jan reports a 8.9% stake in Groupon, Inc. |
| 04/07/2022 |
SC 13D/A
| Barta Jan reports a 7.8% stake in Groupon, Inc. |
| 02/15/2022 |
SC 13D/A
| Barta Jan reports a 5.8% stake in Groupon, Inc. |
| 01/26/2022 |
SC 13D/A
| Barta Jan reports a 9.5% stake in Groupon, Inc. |
| 01/19/2022 |
SC 13D/A
| Barta Jan reports a 6.9% stake in Groupon, Inc. |
| 11/05/2021 |
SC 13D
| Barta Jan reports a 5% stake in Groupon, Inc. |