Shannon River Fund Management LLC

Position in CIEN — Ciena Corp

CIK 1301050 NEW YORK, NY

Position in CIEN

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$39,881,546

New position

Shares Held

81,298

first reported quarter

Ownership

0.057%

of shares outstanding

% of Portfolio

3.56%

of 13F equity value

Holder Rank

#138

of 1,218 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 80% Shared 0% None 20%

Technology · as of Jun 30, 2026

Shannon River Fund Management LLC holds $111,303,159 across 3 Communication Equipment names. CIEN ranks #2 (35.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	EXTR	Extreme Networks Inc	1,424,095	$46,097,955
2	CIEN	Ciena Corp This page	81,298	$39,881,546
3	NOK	Nokia Corp	1,906,902	$25,323,658

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$39,881,546	81,298	—	Shares	Sole	2026-08-13
No filing history on record for this holder in this stock.