secwatch.observer — SEC 8-K summary
======================================

Issuer:     Rigetti Computing, Inc. (RGTI)
CIK:        0001838359
Form:       8-K
Filed at:   2026-04-07T23:59:59+00:00
Accession:  0001104659-26-040377
Event type: other_material
Sentiment:  positive
Materiality: 0.75
Item codes: 7.01, 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud

Rigetti Computing announces general availability of 108-qubit system Cepheus-1-108Q
--------------------------------------------------------------------------------

- Cepheus-1-108Q is Rigetti's highest qubit-count system, with twelve interconnected 9-qubit chiplets.
- System performs at 99.1% median two-qubit gate fidelity and 99.9% median single-gate fidelity with ~60 ns gate speed.
- Available via Rigetti Quantum Cloud Services and on Amazon Braket, as first gate-based device over 100 qubits.
- Rigetti plans to improve two-qubit fidelity to 99.5% later in 2026 and update roadmap toward quantum advantage in ~3 years.
- CEO Dr. Subodh Kulkarni states the chiplet-based architecture validates scaling approach for fault-tolerant quantum computing.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1838359/000110465926040377/0001104659-26-040377-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1838359/000110465926040377/tm2611278d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-26-040377

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