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CIENA CORP

LISTEDNYSE

SYMBOLCIEN

SIC3661

STATE OF INC.MD

FISCAL YEAR ENDSOctober 31

CIK936395

TELEPHONE & TELEGRAPH APPARATUS · LARGE ACCELERATED FILER · 10 FISCAL YEARS OF SEC XBRL DATA, 2016–2025

Fiscal years labelled by the calendar year in which they end. Bars in $ billions; per-share figures as reported.

CAPITALIZATION 11/1/25

($ millions)	Amount	%
Total debt	1,536	36.0
Stockholders' equity	2,729	64.0
Total capitalization	4,265	100.0

141,808,525 shares outstanding at 28 August 2026 (cover page of the 10-Q filed 3 September 2026).

LONG-TERM DEBT 11/1/25

($ millions)	Amount
Long-term debt, noncurrent	1,524
Current maturities	12

CAPITAL STOCK 11/1/25

Common shares authorized	290,000,000
Common shares issued	141,016,300
Par or stated value per share ($)	0.01
Preferred stock ($ millions)	0
Outstanding at 8/28/26	141,808,525

DIVIDENDS DECLARED/PAID

Fiscal year	Per share $	Payout %
2025	–	–
2024	–	–
2023	–	–
2022	–	–
2021	–	–

HISTORY AND BUSINESS

HISTORY: Incorporated in Maryland.

BUSINESS: Classified by the SEC under Standard Industrial Classification 3661, Telephone & Telegraph Apparatus. Large accelerated filer. Principal executive office: 7035 Ridge Road, Hanover, MD 21076. Fiscal year ends October 31. For a description of the business, see Item 1 of the latest 10-K.

CONSOLIDATED INCOME ACCOUNT, YEARS ENDED

($ millions)	11/1/25	11/2/24	10/28/23
Revenues	4,770	4,015	4,387
Cost of revenues	2,765	2,295	2,508
Gross profit	2,005	1,720	1,879
Research and development	848	767	751
Depreciation and amortization	104	93	93
Operating income	198	167	358
Interest expense	89	97	88
Income before income taxes	156	120	324
Income taxes	33	36	69
Net income	123	84	255
Earned per share, diluted ($)	0.85	0.58	1.71
Dividends per share ($)	–	–	–

CONSOLIDATED BALANCE SHEET

($ millions)	11/1/25	11/2/24
Cash and equivalents	1,092	935
Receivables, net	976	909
Inventories	826	820
Total current assets	3,566	3,544
Property, plant and equipment, net	387	338
Goodwill	521	445
Total assets	5,865	5,641
Total current liabilities	1,308	1,000
Long-term debt	1,524	1,533
Total liabilities	3,135	2,825
Stockholders' equity	2,729	2,816
Total liabilities and equity	5,865	5,641

TEN-YEAR STATISTICS: FISCAL YEARS ($ millions except per share)

Fiscal year ended	Revenues	Oper. income	Net income	Net margin %	EPS diluted $	Div. per share $	Oper. cash flow	Capital expend.	Free cash flow	Total assets	Total liabilities	Total debt	Stockholders' equity	ROE %	Debt / equity
11/1/25	4,770	198	123	2.6	0.85	–	806	141	665	5,865	3,135	1,536	2,729	4.5	0.56
11/2/24	4,015	167	84	2.1	0.58	–	515	137	378	5,641	2,825	1,545	2,816	3.0	0.55
10/28/23	4,387	358	255	5.8	1.71	–	168	106	62	5,601	2,753	1,555	2,848	8.9	0.55
10/29/22	3,633	223	153	4.2	1.00	–	(168)	91	(259)	5,070	2,357	1,068	2,713	5.6	0.39
10/30/21	3,621	495	500	13.8	3.19	–	542	80	462	4,865	1,845	677	3,020	16.6	0.22
10/31/20	3,532	487	361	10.2	2.32	–	494	83	411	4,181	1,671	683	2,510	14.4	0.27
11/2/19	3,572	347	253	7.1	1.61	–	413	63	351	3,893	1,721	687	2,173	11.7	0.32
11/3/18	3,094	230	(345)	-11.1	(2.49)	–	229	68	162	–	–	–	1,929	-17.9	–
10/31/17	2,802	215	1,262	45.0	7.53	–	235	95	140	3,952	1,815	393	2,136	59.1	0.18
10/31/16	2,601	156	73	2.8	0.51	–	290	107	182	2,874	2,107	486	766	9.5	0.63

Net margin = net income ÷ revenues; ROE = net income ÷ year-end stockholders’ equity; total debt = long-term debt including current maturities plus short-term borrowings/commercial paper, as tagged in XBRL; free cash flow = operating cash flow − purchases of property, plant and equipment; d = derived as total assets − total equity where the filing does not tag total liabilities; – = not reported in XBRL for that year.

REGISTRANT:

CIENA CORP
CIK 936395 · EIN 23-2725311

PRINCIPAL OFFICE:

7035 Ridge Road, Hanover, MD 21076
Tel.: 4108658500

INCORPORATED:

Maryland

INDUSTRY (SEC SIC CODE):

3661 · Telephone & Telegraph Apparatus

FILER STATUS:

Large accelerated filer

LATEST ANNUAL REPORT:

10-K for period ended 11/1/25, filed 12 December 2025

RECENT FILINGS (ANNUAL REPORT REFERENCES BELOW):

9/3/26	10-Q	period 8/1/26
9/3/26	8-K	period 9/3/26
6/11/26	8-K	period 6/8/26
6/8/26	8-K	period 6/8/26
6/4/26	10-Q	period 5/2/26
6/4/26	8-K	period 6/4/26
3/31/26	8-K	period 3/26/26
3/5/26	10-Q	period 1/31/26

Sources: SEC XBRL company facts (all financial figures) · SEC submissions (registrant, address, SIC, filings) · annual reports: 10-K FY2025 (filed 12/12/25) · 10-K FY2024 (filed 12/20/24) · 10-K FY2023 (filed 12/15/23) · 10-K FY2022 (filed 12/16/22) · 10-K FY2021 (filed 12/17/21) · 10-K FY2020 (filed 12/18/20) · 10-K FY2019 (filed 12/20/19) · 10-K FY2018 (filed 12/21/18). Values are the latest figures filed for each fiscal year (restated where a later 10-K restated them). Ratios and free cash flow are Pathos calculations from those figures. Retrieved 31 October 2026.