secwatch.observer — SEC 8-K summary
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Issuer:     Quantum-Si Inc (QSI)
CIK:        0001816431
Form:       8-K
Filed at:   2026-09-29T00:29:05+00:00
Accession:  0001816431-26-000061
Event type: other_material
Sentiment:  positive
Materiality: 0.65
Item codes: 7.01, 9.01
LLM model:  deepseek-v4.1-flash:cloud@v2

Quantum-Si interim Proteus data: 30x more alignments, 4.8x lower false discovery rate vs Platinum Pro
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- Proteus delivered a median 4,094,411 alignments per single chamber versus 135,901.5 for Platinum Pro (30.1x), identifying all six control peptides in every run.
- Median false discovery rate was 1.36% on Proteus vs 6.58% on Platinum Pro, a 4.8-fold improvement; the developmental kit detects 18 amino acids.
- In a 24-protein panel not previously sequenced on either platform, Proteus detected all 24 proteins vs an average of 20.3 on Platinum, and 269,864 amino acids per run vs 63,366 (4.3x).
- Company projects a full four-chamber Proteus run could yield roughly 60x more alignments than a two-chamber Platinum Pro run; instrument, consumable and software remain unoptimized.
- CEO Jeff Hawkins presents the interim results at World HUPO 2026 in Singapore on Sept. 29, 2026 at 12:15 p.m. SGT in Room 330.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1816431/000181643126000061/0001816431-26-000061-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1816431/000181643126000061/qsi-20260928.htm
  HTML page:      https://secwatch.observer/filing/0001816431-26-000061

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