=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-04-01
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: CIENA CORP (CIEN)
CIK: 0000936395
--- Reporting Owner ---
Name: Phipps Jason
CIK: 0001699193
Role: Officer (SVP Global Sales and Marketing)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -1,735 | Price: $401.58
Total Value: $696,741.47
Shares Owned After: 87,656 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F2] Reflects the weighted average sales price with transactions in a range of sales from $400.83 to $401.825. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #2]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -500 | Price: $402.82
Total Value: $201,412.50
Shares Owned After: 87,156 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F3] Reflects the weighted average sales price with transactions in a range of sales from $402.48 to $403.10. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #3]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -750 | Price: $403.90
Total Value: $302,924.03
Shares Owned After: 86,406 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F4] Reflects the weighted average sales price with transactions in a range of sales from $403.65 to $404.30. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #4]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -2,100 | Price: $405.07
Total Value: $850,651.83
Shares Owned After: 84,306 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F5] Reflects the weighted average sales price with transactions in a range of sales from $404.91 to $405.75. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #5]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -600 | Price: $406.45
Total Value: $243,871.98
Shares Owned After: 83,706 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F6] Reflects the weighted average sales price with transactions in a range of sales from $405.96 to $406.80. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #6]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -460 | Price: $407.48
Total Value: $187,443.01
Shares Owned After: 83,246 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F7] Reflects the weighted average sales price with transactions in a range of sales from $407.00 to $407.87. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #7]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -3,250 | Price: $408.75
Total Value: $1,328,436.52
Shares Owned After: 79,996 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F8] Reflects the weighted average sales price with transactions in a range of sales from $408.41 to $409.27. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #8]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -500 | Price: $409.49
Total Value: $204,747.00
Shares Owned After: 79,496 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F9] Reflects the weighted average sales price with transactions in a range of sales from $409.49 to $409.50. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #9]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -3,100 | Price: $411.23
Total Value: $1,274,813.93
Shares Owned After: 76,396 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F10] Reflects the weighted average sales price with transactions in a range of sales from $410.805 to $411.55. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #10]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -3,441 | Price: $412.24
Total Value: $1,418,522.66
Shares Owned After: 72.955 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F11] Reflects the weighted average sales price with transactions in a range of sales from $411.84 to $412.77. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #11]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -2,279 | Price: $413.35
Total Value: $942,035.82
Shares Owned After: 70,676 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F12] Reflects the weighted average sales price with transactions in a range of sales from $412.84 to $413.81. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #12]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -1,708 | Price: $414.16
Total Value: $707,381.69
Shares Owned After: 68,968 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F13] Reflects the weighted average sales price with transactions in a range of sales from $414.00 to $414.635. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #13]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -400 | Price: $415.20
Total Value: $166,081.00
Shares Owned After: 68,568 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F14] Reflects the weighted average sales price with transactions in a range of sales from $415.00 to $415.27. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #14]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -1,029 | Price: $416.56
Total Value: $428,643.53
Shares Owned After: 67.539 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F15] Reflects the weighted average sales price with transactions in a range of sales from $416.10 to $416.99. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
[Transaction #15]
Security: Common Stock
Date: 2026-04-01 | Code: S (Open market sale)
Shares: -162 | Price: $417.07
Total Value: $67,564.98
Shares Owned After: 67,377 | Ownership: D (Direct)
Footnotes:
[F1] Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
[F16] Reflects the weighted average sales price with transactions in a range of sales from $417.00 to $417.22. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
[F17] Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
--- Footnotes (Complete Index) ---
F1: Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/09/2024, as modified on 10/06/2025.
F10: Reflects the weighted average sales price with transactions in a range of sales from $410.805 to $411.55. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F11: Reflects the weighted average sales price with transactions in a range of sales from $411.84 to $412.77. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F12: Reflects the weighted average sales price with transactions in a range of sales from $412.84 to $413.81. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F13: Reflects the weighted average sales price with transactions in a range of sales from $414.00 to $414.635. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F14: Reflects the weighted average sales price with transactions in a range of sales from $415.00 to $415.27. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F15: Reflects the weighted average sales price with transactions in a range of sales from $416.10 to $416.99. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F16: Reflects the weighted average sales price with transactions in a range of sales from $417.00 to $417.22. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F17: Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
F2: Reflects the weighted average sales price with transactions in a range of sales from $400.83 to $401.825. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F3: Reflects the weighted average sales price with transactions in a range of sales from $402.48 to $403.10. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F4: Reflects the weighted average sales price with transactions in a range of sales from $403.65 to $404.30. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F5: Reflects the weighted average sales price with transactions in a range of sales from $404.91 to $405.75. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F6: Reflects the weighted average sales price with transactions in a range of sales from $405.96 to $406.80. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F7: Reflects the weighted average sales price with transactions in a range of sales from $407.00 to $407.87. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F8: Reflects the weighted average sales price with transactions in a range of sales from $408.41 to $409.27. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
F9: Reflects the weighted average sales price with transactions in a range of sales from $409.49 to $409.50. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
--- Signature ---
/s/ By: Michelle Rankin For: Jason Phipps (2026-04-03)
