| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 05/25/2023 | PERDOCEO EDUCATION Corp | CECO | Grant | Common Stock | 7.8k | $0.00 | $0 | | 05/25/2023 |
| 03/14/2023 | PERDOCEO EDUCATION Corp | CECO | Exercise | Non-qualified Option (right to buy) | 16k | $2.82 | $45.1k | | 03/14/2023 |
| 06/27/2022 | CME GROUP INC. | CME | Grant | Common Stock Class A | 693 | $209.44 | $145.1k | | 06/27/2022 |
| 05/26/2022 | PERDOCEO EDUCATION Corp | CECO | Grant | Common Stock | 9k | $0.00 | $0 | | 05/26/2022 |
| 03/07/2022 | PERDOCEO EDUCATION Corp | CECO | Exercise | Non-Qualified Option (right to buy) | 16k | $6.51 | $104.2k | | 03/07/2022 |
| 01/25/2022 | CME GROUP INC. | CME | Grant | Common Stock Class A | 47 | $0.00 | $0 | | 01/25/2022 |
| 12/13/2021 | PILLARSTONE CAPITAL REIT | PRLE | Grant | Common Shares | 22.9k | $0.00 | $0 | | 12/13/2021 |
| 06/25/2021 | CME GROUP INC. | CME | Grant | Common Stock Class A | 551 | $218.12 | $120.2k | | 06/25/2021 |
| 06/03/2021 | PERDOCEO EDUCATION Corp | CECO | Grant | Common Stock | 8.3k | $0.00 | $0 | | 06/03/2021 |
| 12/17/2020 | PILLARSTONE CAPITAL REIT | PRLE | Grant | Common Shares | 26.1k | $0.00 | $0 | | 12/17/2020 |
| 08/12/2020 | PILLARSTONE CAPITAL REIT | PRLE | Grant | Common Shares | 66.7k | $0.00 | $0 | | 08/12/2020 |
| 06/25/2020 | CME GROUP INC. | CME | Grant | Common Stock Class A | 712 | $0.00 | $0 | | 06/25/2020 |
| 05/28/2020 | PERDOCEO EDUCATION Corp | CECO | Grant | Common Stock | 7.5k | $0.00 | $0 | | 05/28/2020 |
| 06/25/2019 | CME GROUP INC. | CME | Grant | Common Stock Class A | 606 | $0.00 | $0 | | 06/25/2019 |
| 03/29/2019 | PILLARSTONE CAPITAL REIT | PRLE | Purchase | Common Stock | 2k | $2.80 | $5.6k | | 03/29/2019 |
| 03/29/2019 | PILLARSTONE CAPITAL REIT | PRLE | Purchase | | 0 | $1.33 | $0 | | 03/29/2019 |
| 03/29/2019 | PILLARSTONE CAPITAL REIT | PRLE | Purchase | Class C Convertible Preferred Stock | 22.5k | $4.00 | $90k | | 03/29/2019 |
| 09/25/2018 | CME GROUP INC. | CME | Grant | Common Stock Class A | 87 | $0.00 | $0 | | 09/25/2018 |
| 06/25/2018 | CME GROUP INC. | CME | Grant | Common Stock Class A | 601 | $0.00 | $0 | | 06/25/2018 |
| 05/31/2018 | PERDOCEO EDUCATION Corp | CECO | Grant | Non-Qualified Stock Option (right to buy | 8k | $15.39 | $123.4k | | 05/31/2018 |
| 06/26/2017 | CME GROUP INC. | CME | Grant | Common Stock Class A | 809 | $0.00 | $0 | | 06/26/2017 |
| 05/23/2017 | PERDOCEO EDUCATION Corp | CECO | Grant | Non-Qualified Stock Option (right to buy) | 11.3k | $9.69 | $109.2k | | 05/23/2017 |
| 02/08/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 17.9k | $0.31 | $5.5k | | 02/06/2017 |
| 02/07/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 17k | $0.33 | $5.6k | | 02/06/2017 |
| 02/06/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 52.1k | $0.34 | $17.7k | | 02/06/2017 |
| 02/06/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 52.1k | $0.33 | $17.2k | | 02/06/2017 |
| 02/03/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 30k | $0.35 | $10.5k | | 02/02/2017 |
| 01/18/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 200 | $0.32 | $64 | | 01/18/2017 |
| 01/18/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 5k | $0.33 | $1.6k | | 01/18/2017 |
| 01/17/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 5k | $0.35 | $1.8k | | 01/17/2017 |
| 01/17/2017 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 11.2k | $0.34 | $3.8k | | 01/17/2017 |
| 12/30/2016 | Prism Technologies Group, Inc. | PRZM | Purchase | Common Stock | 9.7k | $0.28 | $2.7k | | 12/30/2016 |
| 07/01/2011 | Prism Technologies Group, Inc. | PRZM | Grant | Option to purchase | 5k | $7.22 | $36.1k | | 07/01/2011 |
| 03/30/2010 | Prism Technologies Group, Inc. | PRZM | Grant | option to Purchase | 15k | $5.25 | $78.8k | | 03/30/2010 |