InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (22 ops.)
Discover the detailed record of transactions filed by ALEXANDER STEPHEN B, Senior Vice President and Chief Technology Officer. Officer active across 1 companies, notably CIENA CORP. In total, 32 reports have been logged. Total volume traded: €2.2m. The latest transaction was filed on 20 June 2022 (Retenue fiscale). Regulator: SEC (Form 4). All data is free.
Declarations32 total
€10,434252 shares@ €41.40380.0000% mcap0.4% of flow
Common Stock
SEC:0001177261-22-000013:0·
€83,6442,000 shares@ €41.82210.0003% mcap3.4% of flow
Common Stock
SEC:0001177261-22-000011:0·
€100,0672,000 shares@ €50.03370.0004% mcap4.1% of flow
Common Stock
SEC:0001177261-22-000009:0·
€13,645252 shares@ €54.14650.0001% mcap0.6% of flow
Common Stock
SEC:0001177261-22-000007:0·
€113,9542,000 shares@ €56.97690.0004% mcap4.7% of flow
Common Stock
SEC:0001177261-22-000004:0·
€113,9542,000 shares@ €56.97690.0004% mcap10.3% of flow
Common Stock
SEC:0001177261-22-000004·
€123,7972,000 shares@ €61.89870.0005% mcap11.2% of flow
Common Stock
SEC:0001177261-22-000002·
€123,7972,000 shares@ €61.89870.0005% mcap5.1% of flow
Common Stock
SEC:0001177261-22-000002:0·
€47,496717 shares@ €66.24250.0002% mcap4.3% of flow
Common Stock
SEC:0001177261-21-000036·
€47,496717 shares@ €66.24250.0002% mcap2.0% of flow
Common Stock
SEC:0001177261-21-000036:0·
€131,1752,000 shares@ €65.58770.0005% mcap11.8% of flow
Common Stock
SEC:0001177261-21-000034·
€131,1752,000 shares@ €65.58770.0005% mcap5.4% of flow
Common Stock
SEC:0001177261-21-000034:0·
011,939 shares0
Common Stock
SEC:0001177261-21-000032·
011,939 shares0
Common Stock
SEC:0001177261-21-000032:0·
€107,3972,000 shares@ €53.69860.0004% mcap9.7% of flow
Common Stock
SEC:0001177261-21-000030·
€107,3972,000 shares@ €53.69860.0004% mcap4.4% of flow
Common Stock
SEC:0001177261-21-000030:0·
€91,9642,000 shares@ €45.98190.0003% mcap8.3% of flow
Common Stock
SEC:0001177261-21-000027·
€91,9642,000 shares@ €45.98190.0003% mcap3.8% of flow
Common Stock
SEC:0001177261-21-000027:0·
€21,940498 shares@ €44.05720.0001% mcap2.0% of flow
Common Stock
SEC:0001177261-21-000024·
€21,940498 shares@ €44.05720.0001% mcap0.9% of flow
Common Stock
SEC:0001177261-21-000024:0·
€89,6792,000 shares@ €44.83930.0003% mcap8.1% of flow
Common Stock
SEC:0001177261-21-000022·
€89,6792,000 shares@ €44.83930.0003% mcap3.7% of flow
Common Stock
SEC:0001177261-21-000022:0·
€94,6522,000 shares@ €47.32620.0004% mcap8.5% of flow
Common Stock
SEC:0001177261-21-000020·
€94,6522,000 shares@ €47.32620.0004% mcap3.9% of flow
Common Stock
SEC:0001177261-21-000020:0·
€96,0062,000 shares@ €48.00280.0004% mcap8.6% of flow
Common Stock
SEC:0001177261-21-000018·
25 of 32 declarations
About ALEXANDER STEPHEN B
Stephen B. Alexander is a long-tenured technology executive at Ciena Corp, which he joined in 1994 when the company was still in its early startup phase. His most notable and most recently documented role is Senior Vice President and Chief Technology Officer (CTO). Over time, he also served as Senior Vice President of Products & Technology, General Manager of Products & Technology, and General Manager of Transport and Switching and Data Networking. Earlier in his Ciena career, he held the title of Vice President and Chief Technology Officer. ([investor.ciena.com](https://investor.ciena.com/static-files/3377a0ed-d2fa-44a8-a1db-3c8018606d9f)) Before joining Ciena, Alexander worked at MIT Lincoln Laboratory, where he was Assistant Leader of the Optical Communications Technology Group. That background established his deep expertise in optical communications and helped position him as a technical leader in the networking and photonics space. At Ciena, his responsibilities have spanned technology strategy, product direction, and the development of solutions for metro and long-haul networks. ([investor.ciena.com](https://investor.ciena.com/static-files/8248e0d1-0383-46aa-bcf8-307716bca77e)) He is closely associated with some of Ciena’s key innovation milestones, including advanced DWDM systems and broader optical transport technology development. Ciena has credited him with helping shape technologies for metro and long-haul networks and with guiding the company’s technical evolution over decades. His industry standing was formally recognized in 2012, when he received the IEEE Communications Society Industrial Innovation Award and was elevated to IEEE Fellow for contributions to optical communications technologies, systems, and architectures. ([ciena.com](https://www.ciena.com/insights/blog/2025/honoring-a-legacy-of-innovation-steve-alexanders-impact-on-telecom)) Alexander’s career reflects a rare blend of scientific depth, product leadership, and long-term strategic continuity. At Ciena, he helped steer a young telecommunications startup into a major optical networking company while consistently advocating for software-driven, programmable, and open network architectures. His expertise is most strongly associated with optical infrastructure innovation, network platform evolution, and technology strategy at scale. ([investor.ciena.com](https://investor.ciena.com/static-files/3377a0ed-d2fa-44a8-a1db-3c8018606d9f))
