Flash FinanceUS
Market closed · weekend S&P 5007,376.86+0.31% Nasdaq24,579.42+1.09% Dow 3051,285.73-0.46% Russell 20002,754.11+0.89% Nasdaq-10026,989.99+1.35% MidCap 4003,602.50+0.56% SmallCap 6001,673.98+0.05% VIX25.64-9.01% 10Y Yield4.86+0.45% Close of Nov 06, 2026
AI brief of an SEC Form 8-K · Ciena (CIEN)

Ciena Q4 revenue rises 20% to $1.35 billion; GAAP EPS falls to $0.13

Mixed Impact 3 of 5 earnings Written later

Ciena reported fiscal fourth quarter 2025 revenue of $1.35 billion, up 20% from a year earlier, and adjusted diluted EPS of $0.91 versus $0.54. GAAP diluted EPS fell to $0.13 from $0.25, reflecting $106.9 million in significant asset impairments and restructuring costs in the quarter. The company guided fiscal 2026 revenue to $5.7 billion to $6.1 billion, and fiscal first quarter 2026 revenue to $1.35 billion to $1.43 billion.

Key points

  • Q4 fiscal 2025 revenue was $1.35 billion, compared with $1.12 billion a year earlier.
  • GAAP diluted EPS was $0.13 versus $0.25; adjusted (non-GAAP) diluted EPS was $0.91 versus $0.54.
  • Significant asset impairments and restructuring costs were $106.9 million in the quarter, versus $2.6 million a year earlier.
  • Fiscal 2026 revenue guidance is $5.7 billion to $6.1 billion; fiscal Q1 2026 revenue guidance is $1.35 billion to $1.43 billion.

The filing

CompanyCiena (CIEN)
Form8-K, current report
Filed with the SECDec 11, 2025, 7:07 AM ET
Accession number0001628280-25-056425

Items reported: 2.02 Results of Operations

Read the filing on SEC.gov ↗

Written by AI (Anthropic Claude, claude-haiku-5-5) on Nov 8, 2026, 1:30 AM ET, from the text of the filing and its press-release exhibits only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on December 11, 2025.

Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.