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Filing tables
Filing exhibits
- S-1 IPO registration
- 3.1 EX-3.1
- 3.3 EX-3.3
- 4.1 EX-4.1
- 4.2 EX-4.2
- 10.1 EX-10.1
- 10.5 EX-10.5
- 10.6 EX-10.6
- 10.8 EX-10.8
- 10.9 EX-10.9
- 10.10 EX-10.10
- 10.11 EX-10.11
- 10.12 EX-10.12
- 10.13 EX-10.13
- 10.14 EX-10.14
- 10.15 EX-10.15
- 10.16 EX-10.16
- 10.17 EX-10.17
- 10.18 EX-10.18
- 21.1 EX-21.1
- 23.1 EX-23.1
- 99.1 EX-99.1
- EX-FILING FEES Ex-filing Fees
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Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the use in this Registration Statement on Form S-1 of Upstream Bio, Inc. of our report dated June 12, 2024, relating to the financial statements of Upstream Bio, Inc., which appears in this Registration Statement. We also consent to the reference to us under the heading “Experts” in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
September 18, 2024
1