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CITADEL ADVISORS LLC
> REFR
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | RESEARCH FRONTIERS INC | REFR | 27,579 | 18,219 | 44,126,000 | 26,155,000 | $1,599.99 |
| 12/31/2022 | RESEARCH FRONTIERS INC | REFR | 9,360 | 9,360 | 17,971,000 | 17,971,000 | $1,919.98 |
| 06/30/2022 | RESEARCH FRONTIERS INC | REFR | 0 | -29,645 | 0 | -57,000 | |
| 03/31/2022 | RESEARCH FRONTIERS INC | REFR | 29,645 | 10,318 | 57,000 | 24,000 | $1.92 |
| 12/31/2021 | RESEARCH FRONTIERS INC | REFR | 19,327 | -11,027 | 33,000 | -45,000 | $1.71 |
| 09/30/2021 | RESEARCH FRONTIERS INC | REFR | 30,354 | 30,354 | 78,000 | 78,000 | $2.57 |
| 03/31/2021 | RESEARCH FRONTIERS INC | REFR | 0 | -25,563 | 0 | -72,000 | |
| 12/31/2020 | RESEARCH FRONTIERS INC | REFR | 25,563 | 4,363 | 72,000 | 15,000 | $2.82 |
| 09/30/2020 | RESEARCH FRONTIERS INC | REFR | 21,200 | -8,610 | 57,000 | -64,000 | $2.69 |
| 06/30/2020 | RESEARCH FRONTIERS INC | REFR | 29,810 | 4,291 | 121,000 | 61,000 | $4.06 |
| 03/31/2020 | RESEARCH FRONTIERS INC | REFR | 25,519 | 11,857 | 60,000 | 19,000 | $2.35 |
| 12/31/2019 | RESEARCH FRONTIERS INC | REFR | 13,662 | -18,020 | 41,000 | -60,000 | $3.00 |
| 09/30/2019 | RESEARCH FRONTIERS INC | REFR | 31,682 | 31,682 | 101,000 | 101,000 | $3.19 |
| 12/31/2017 | RESEARCH FRONTIERS INC | REFR | 0 | -15,762 | 0 | -19,000 | |
| 09/30/2017 | RESEARCH FRONTIERS INC | REFR | 15,762 | 15,762 | 19,000 | 19,000 | $1.21 |
| 12/31/2016 | RESEARCH FRONTIERS INC | REFR | 0 | -20,974 | 0 | -54,000 | |
| 09/30/2016 | RESEARCH FRONTIERS INC | REFR | 20,974 | 20,974 | 54,000 | 54,000 | $2.57 |
| 06/30/2016 | RESEARCH FRONTIERS INC | REFR | 12,652 | 12,652 | 46,000 | 46,000 | $3.64 |
| 03/31/2016 | RESEARCH FRONTIERS INC | REFR | 0 | -7,225 | 0 | -38,000 | |
| 12/31/2015 | RESEARCH FRONTIERS INC | REFR | 7,225 | 7,225 | 38,000 | 38,000 | $5.26 |
| 09/30/2015 | RESEARCH FRONTIERS INC | REFR | 0 | -12,741 | 0 | -78,000 | |
| 06/30/2015 | RESEARCH FRONTIERS INC | REFR | 0 | -12,741 | 0 | -78,000 | |
| 03/31/2015 | RESEARCH FRONTIERS INC | REFR | 12,741 | 3,411 | 78,000 | 30,000 | $6.12 |
| 12/31/2014 | RESEARCH FRONTIERS INC | REFR | 9,330 | 5,876 | 48,000 | 28,000 | $5.14 |
| 09/30/2014 | RESEARCH FRONTIERS INC | REFR | 3,454 | 977 | 20,000 | 5,000 | $5.79 |
| 06/30/2014 | RESEARCH FRONTIERS INC | REFR | 2,477 | -10,805 | 15,000 | -54,000 | $6.06 |
| 03/31/2014 | RESEARCH FRONTIERS INC | REFR | 13,282 | 11,930 | 69,000 | 61,000 | $5.20 |
| 12/31/2013 | RESEARCH FRONTIERS INC | REFR | 1,352 | 1,352 | 8,000 | 8,000 | $5.92 |
| 06/30/2013 | RESEARCH FRONTIERS INC | REFR | 0 | -13,435 | 0 | -49,000 | |
| 03/31/2013 | RESEARCH FRONTIERS INC | REFR | 13,435 | 13,435 | 49,000 | 49,000 | $3.65 |
| 09/30/2011 | RESEARCH FRONTIERS INC | REFR | 0 | -2,070 | 0 | -9,000 | |
| 06/30/2011 | RESEARCH FRONTIERS INC | REFR | 0 | -441 | 0 | -3,000 | |
| 03/31/2011 | RESEARCH FRONTIERS INC | REFR | 441 | -5,732 | 3,000 | -30,000 | $6.80 |
| 12/31/2010 | RESEARCH FRONTIERS INC | REFR | 6,173 | 4,200 | 33,000 | 25,000 | $5.35 |
| 09/30/2010 | RESEARCH FRONTIERS INC | REFR | 1,973 | 1,973 | 8,000 | 8,000 | $4.05 |
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