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NORTHERN TRUST CORP
> REFR
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | RESEARCH FRONTIERS INC | REFR | 57,278 | -180 | 91,645,000 | -6,608,000 | $1,600.00 |
| 03/31/2023 | RESEARCH FRONTIERS INC | REFR | 57,458 | 4,276 | 98,253,000 | 98,140,000 | $1,710.00 |
| 09/30/2022 | RESEARCH FRONTIERS INC | REFR | 53,182 | 0 | 113,000 | 20,000 | $2.12 |
| 06/30/2022 | RESEARCH FRONTIERS INC | REFR | 53,182 | -3,049 | 93,000 | -15,000 | $1.75 |
| 03/31/2022 | RESEARCH FRONTIERS INC | REFR | 56,231 | 0 | 108,000 | 11,000 | $1.92 |
| 12/31/2021 | RESEARCH FRONTIERS INC | REFR | 56,231 | -117 | 97,000 | -47,000 | $1.73 |
| 09/30/2021 | RESEARCH FRONTIERS INC | REFR | 56,348 | 0 | 144,000 | 10,000 | $2.56 |
| 06/30/2021 | RESEARCH FRONTIERS INC | REFR | 56,348 | -254,965 | 134,000 | -741,000 | $2.38 |
| 12/31/2020 | RESEARCH FRONTIERS INC | REFR | 311,313 | 1,893 | 875,000 | 40,000 | $2.81 |
| 09/30/2020 | RESEARCH FRONTIERS INC | REFR | 309,420 | 249,428 | 835,000 | 694,000 | $2.70 |
| 03/31/2020 | RESEARCH FRONTIERS INC | REFR | 59,992 | -337 | 141,000 | -41,000 | $2.35 |
| 12/31/2019 | RESEARCH FRONTIERS INC | REFR | 60,329 | 4,670 | 182,000 | 4,000 | $3.02 |
| 09/30/2019 | RESEARCH FRONTIERS INC | REFR | 55,659 | 16,744 | 178,000 | 49,000 | $3.20 |
| 06/30/2019 | RESEARCH FRONTIERS INC | REFR | 38,915 | -2,215 | 129,000 | 40,000 | $3.31 |
| 03/31/2019 | RESEARCH FRONTIERS INC | REFR | 41,130 | 0 | 89,000 | 24,000 | $2.16 |
| 12/31/2018 | RESEARCH FRONTIERS INC | REFR | 41,130 | -2,259 | 65,000 | -3,000 | $1.58 |
| 09/30/2018 | RESEARCH FRONTIERS INC | REFR | 43,389 | 0 | 68,000 | 32,000 | $1.57 |
| 06/30/2018 | RESEARCH FRONTIERS INC | REFR | 43,389 | 0 | 36,000 | -7,000 | $0.83 |
| 03/31/2018 | RESEARCH FRONTIERS INC | REFR | 43,389 | 0 | 43,000 | -2,000 | $0.99 |
| 12/31/2017 | RESEARCH FRONTIERS INC | REFR | 43,389 | 0 | 45,000 | -7,000 | $1.04 |
| 09/30/2017 | RESEARCH FRONTIERS INC | REFR | 43,389 | 0 | 52,000 | -4,000 | $1.20 |
| 06/30/2017 | RESEARCH FRONTIERS INC | REFR | 43,389 | 0 | 56,000 | -5,000 | $1.29 |
| 03/31/2017 | RESEARCH FRONTIERS INC | REFR | 43,389 | 43,389 | 61,000 | 61,000 | $1.41 |
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