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OPPENHEIMER & CO INC
> PIRS
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 03/31/2023 | PIERIS PHARMACEUTICALS, INC. | PIRS | 10,500 | 0 | 10,248,000 | -672,000 | $976.00 |
| 12/31/2022 | PIERIS PHARMACEUTICALS, INC. | PIRS | 10,500 | 0 | 10,920,000 | 10,908,000 | $1,040.00 |
| 09/30/2022 | PIERIS PHARMACEUTICALS, INC. | PIRS | 10,500 | 0 | 12,000 | -8,000 | $1.14 |
| 06/30/2022 | PIERIS PHARMACEUTICALS, INC. | PIRS | 10,500 | 0 | 20,000 | -12,000 | $1.90 |
| 03/31/2022 | PIERIS PHARMACEUTICALS, INC. | PIRS | 10,500 | 10,500 | 32,000 | 32,000 | $3.05 |
| 09/30/2021 | PIERIS PHARMACEUTICALS, INC. | PIRS | 0 | -12,200 | 0 | -47,000 | |
| 06/30/2021 | PIERIS PHARMACEUTICALS, INC. | PIRS | 12,200 | -6,800 | 47,000 | -2,000 | $3.85 |
| 03/31/2021 | PIERIS PHARMACEUTICALS, INC. | PIRS | 19,000 | 0 | 49,000 | 1,000 | $2.58 |
| 12/31/2020 | PIERIS PHARMACEUTICALS, INC. | PIRS | 19,000 | -5,000 | 48,000 | -2,000 | $2.53 |
| 09/30/2020 | PIERIS PHARMACEUTICALS, INC. | PIRS | 24,000 | -800 | 50,000 | -27,000 | $2.08 |
| 06/30/2020 | PIERIS PHARMACEUTICALS, INC. | PIRS | 24,800 | -4,900 | 77,000 | 10,000 | $3.10 |
| 03/31/2020 | PIERIS PHARMACEUTICALS, INC. | PIRS | 29,700 | 5,000 | 67,000 | -22,000 | $2.26 |
| 12/31/2019 | PIERIS PHARMACEUTICALS, INC. | PIRS | 24,700 | 24,700 | 89,000 | 89,000 | $3.60 |
| 03/31/2017 | PIERIS PHARMACEUTICALS, INC. | PIRS | 0 | -16,500 | 0 | -23,000 | |
| 12/31/2016 | PIERIS PHARMACEUTICALS, INC. | PIRS | 16,500 | 1,500 | 23,000 | -4,000 | $1.39 |
| 09/30/2016 | PIERIS PHARMACEUTICALS, INC. | PIRS | 15,000 | 0 | 27,000 | 3,000 | $1.80 |
| 06/30/2016 | PIERIS PHARMACEUTICALS, INC. | PIRS | 15,000 | 15,000 | 24,000 | 24,000 | $1.60 |
| 03/31/2016 | PIERIS PHARMACEUTICALS, INC. | PIRS | 59,680 | 59,680 | 113,000 | 113,000 | $1.89 |
| 12/31/2015 | PIERIS PHARMACEUTICALS, INC. | PIRS | 15,000 | 5,000 | 34,000 | 16,000 | $2.27 |
| 09/30/2015 | PIERIS PHARMACEUTICALS, INC. | PIRS | 10,000 | 10,000 | 18,000 | 18,000 | $1.80 |
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