When does Ciena Corporation (CIEN) report earnings? During market hours in 12 of its last 12 reports

Of its last 12 earnings announcements: 12 during market hours. Each one comes from the 8-K with item 2.02 that Ciena filed with the SEC, paired with the 10-Q or 10-K for that same quarter: 65 quarters since Sep 8, 2010, and every row links to its filing.

Next date: CIEN does not appear in the announced-earnings calendar this site covers (Oct 21, 2026 to Nov 24, 2026). When the company announces the day it will show up here; until then there is no date, and an estimate of ours would not be one.

The last 20 quarters, one by one

"Lead": trading sessions between the announcement and the full quarterly report to the SEC (10-Q, or 10-K at fiscal year end). For Ciena, a median of 0 sessions over the last 12 quarters, i.e. the same market day.

The table shows the 20 most recent quarters. All 65 are in the CSV, with the same columns and one row per quarter.

Download all 65 CIEN quarters as CSV → Free, no account.

How Ciena shares moved on their latest earnings

Over the 8 announcements with prices in this table, CIEN rose 3 times and fell 5 times; the median move, ignoring sign, was 12.9%, against 0.5% for SPY over the same windows. The largest, +23.3%, came with the results of Sep 4, 2025. Reported EPS beat the consensus estimate in 5 of the 5 quarters with an estimate.

CIEN window: when it reported before the open or during market hours, from the previous close to that day's. Split-adjusted closes and EPS with its estimate, from Yahoo Finance. It already happened: it does not anticipate the next announcement.

Where each number comes from

From the 8-K with item 2.02 ("Results of Operations and Financial Condition") that Ciena filed on EDGAR, the SEC's public database; only those with their 10-Q or 10-K behind them count, so other 8-Ks with the same item (production figures, monthly sales) stay out. The time is converted to New York time using this specific company's stamp convention (its EDGAR stamp arrives in UTC), and it is not assumed: it is derived from the hours in which EDGAR accepts filings.

What this data does not know

• The exact time of the press release: the 8-K reaches EDGAR minutes or hours later, so Ciena's median 11:17 is an upper bound. The session says which one the news landed in, not what minute it was said.
• Nothing before Sep 8, 2010: it is Ciena's oldest quarter with announcement and report paired in the file.
• What will happen. Every date on the page already happened. Ciena reporting during market hours 49 quarters in a row does not say the next one will be the same.
• Ciena's identity is its SEC CIK (0000936395), not its symbol: symbols get recycled and renamed.

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More on Ciena

Ciena is in the Technology sector. On the model's multifactor score of Oct 21, 2026 it ranks 53 of 464, and 19 of the 83 companies in its sector that score. It is a quantitative model ranking, not a recommendation.

Ciena (CIEN) analysis page →

CIEN insider buys and sells →

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Guide: 10-K, 10-Q and 8-K · all guides

Source: EDGAR, the SEC's public database (forms 8-K, 10-Q and 10-K). Data through Sep 3, 2026. This is a list of public facts and of calculations made on them, not financial advice or a recommendation to buy or sell.