secwatch.observer — SEC 8-K summary
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Issuer:     Upstream Bio, Inc. (UPB)
CIK:        0002022626
Form:       8-K
Filed at:   2024-10-15T23:59:59+00:00
Accession:  0001193125-24-237580
Event type: other_material
Sentiment:  neutral
Materiality: 0.20
Item codes: 5.03, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Upstream Bio files amended charter and bylaws following IPO completion
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- Authorizes 500M shares of common stock and 10M shares of undesignated preferred stock.
- Eliminates stockholder ability to act by written consent and call special meetings.
- Establishes advance notice procedures for stockholder proposals and director nominations.
- Amendments effective upon IPO completion on October 10 and October 15, 2024.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/2022626/000119312524237580/0001193125-24-237580-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/2022626/000119312524237580/d897785d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-24-237580

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer