David M. Rothenstein

CIK: 0001444157

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)24 (29.3%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)6 (7.3%)

Compensation grants

Other (G, F, J, C, D, …)52 (63.4%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CIEN

CIENA CORP

Officer

Discretionary Trading P&L

Holdings

Transaction History (82 total)

CIEN
CIENA CORP
Oct 15, 2026
Sale(S)
Direct
2.5K shares at avg. $348.06$870K
CIEN
CIENA CORP
Sep 20, 2026
Tax Payment(F)
Direct
204 shares at avg. $348.80$71K
CIEN
CIENA CORP
Sep 20, 2026
Tax Payment(F)
Direct
436 shares at avg. $348.80$152K
CIEN
CIENA CORP
Sep 20, 2026
Tax Payment(F)
Direct
811 shares at avg. $348.80$283K
CIEN
CIENA CORP
Sep 20, 2026
Tax Payment(F)
Direct
220 shares at avg. $348.80$77K
CIEN
CIENA CORP
Sep 20, 2026
Tax Payment(F)
Direct
679 shares at avg. $348.80$237K
CIEN
CIENA CORP
Sep 15, 2026
Sale(S)
Direct
2.5K shares at avg. $330.48$826K
CIEN
CIENA CORP
Aug 14, 2026
Sale(S)
Direct
2.5K shares at avg. $438.10$1.1M
CIEN
CIENA CORP
Jul 15, 2026
Sale(S)
Direct
2.5K shares at avg. $420.91$1.1M
CIEN
CIENA CORP
Jun 20, 2026
Tax Payment(F)
Direct
811 shares at avg. $428.22$347K
CIEN
CIENA CORP
Jun 20, 2026
Tax Payment(F)
Direct
436 shares at avg. $428.22$187K
CIEN
CIENA CORP
Jun 20, 2026
Tax Payment(F)
Direct
204 shares at avg. $428.22$87K
CIEN
CIENA CORP
Jun 20, 2026
Tax Payment(F)
Direct
220 shares at avg. $428.22$94K
CIEN
CIENA CORP
Jun 20, 2026
Tax Payment(F)
Direct
679 shares at avg. $428.22$291K
CIEN
CIENA CORP
Jun 15, 2026
Sale(S)
Direct
2.5K shares at avg. $457.07$1.1M
CIEN
CIENA CORP
May 15, 2026
Sale(S)
Direct
2.5K shares at avg. $562.39$1.4M
CIEN
CIENA CORP
Apr 15, 2026
Sale(S)
Direct
2.5K shares at avg. $467.65$1.2M
CIEN
CIENA CORP
Mar 20, 2026
Tax Payment(F)
Direct
220 shares at avg. $383.89$84K
CIEN
CIENA CORP
Mar 20, 2026
Tax Payment(F)
Direct
472 shares at avg. $383.89$181K
CIEN
CIENA CORP
Mar 20, 2026
Tax Payment(F)
Direct
811 shares at avg. $383.89$311K
CIEN
CIENA CORP
Mar 20, 2026
Tax Payment(F)
Direct
174 shares at avg. $383.89$67K
CIEN
CIENA CORP
Mar 20, 2026
Tax Payment(F)
Direct
436 shares at avg. $383.89$167K
CIEN
CIENA CORP
Mar 16, 2026
Sale(S)
Direct
2.5K shares at avg. $345.00$863K
CIEN
CIENA CORP
Feb 17, 2026
Sale(S)
Direct
2.5K shares at avg. $300.20$750K
CIEN
CIENA CORP
Jan 9, 2026
Sale(S)
Direct
2.5K shares at avg. $219.28$548K

		Type	Shares	Price		Ownership
Oct 15, 2026	CIEN CIENA CORP	Sale(S)	2,500	$348.06	$870,157	Direct
Sep 20, 2026	CIEN CIENA CORP	Tax Payment(F)	204	$348.80	$71,155	Direct
Sep 20, 2026	CIEN CIENA CORP	Tax Payment(F)	436	$348.80	$152,077	Direct
Sep 20, 2026	CIEN CIENA CORP	Tax Payment(F)	811	$348.80	$282,877	Direct
Sep 20, 2026	CIEN CIENA CORP	Tax Payment(F)	220	$348.80	$76,736	Direct
Sep 20, 2026	CIEN CIENA CORP	Tax Payment(F)	679	$348.80	$236,835	Direct
Sep 15, 2026	CIEN CIENA CORP	Sale(S)	2,500	$330.48	$826,208	Direct
Aug 14, 2026	CIEN CIENA CORP	Sale(S)	2,500	$438.10	$1,095,250	Direct
Jul 15, 2026	CIEN CIENA CORP	Sale(S)	2,500	$420.91	$1,052,284	Direct
Jun 20, 2026	CIEN CIENA CORP	Tax Payment(F)	811	$428.22	$347,286	Direct
Jun 20, 2026	CIEN CIENA CORP	Tax Payment(F)	436	$428.22	$186,704	Direct
Jun 20, 2026	CIEN CIENA CORP	Tax Payment(F)	204	$428.22	$87,357	Direct
Jun 20, 2026	CIEN CIENA CORP	Tax Payment(F)	220	$428.22	$94,208	Direct
Jun 20, 2026	CIEN CIENA CORP	Tax Payment(F)	679	$428.22	$290,761	Direct
Jun 15, 2026	CIEN CIENA CORP	Sale(S)	2,500	$457.07	$1,142,673	Direct
May 15, 2026	CIEN CIENA CORP	Sale(S)	2,500	$562.39	$1,405,969	Direct
Apr 15, 2026	CIEN CIENA CORP	Sale(S)	2,500	$467.65	$1,169,134	Direct
Mar 20, 2026	CIEN CIENA CORP	Tax Payment(F)	220	$383.89	$84,456	Direct
Mar 20, 2026	CIEN CIENA CORP	Tax Payment(F)	472	$383.89	$181,196	Direct
Mar 20, 2026	CIEN CIENA CORP	Tax Payment(F)	811	$383.89	$311,335	Direct
Mar 20, 2026	CIEN CIENA CORP	Tax Payment(F)	174	$383.89	$66,797	Direct
Mar 20, 2026	CIEN CIENA CORP	Tax Payment(F)	436	$383.89	$167,376	Direct
Mar 16, 2026	CIEN CIENA CORP	Sale(S)	2,500	$345.00	$862,500	Direct
Feb 17, 2026	CIEN CIENA CORP	Sale(S)	2,500	$300.20	$750,498	Direct
Jan 9, 2026	CIEN CIENA CORP	Sale(S)	2,500	$219.28	$548,200	Direct

1-25 of 82 transactions

About Rothenstein David M

Rothenstein David M (SEC CIK 0001444157) files insider reports with the SEC as EVP & Chief Strategy Officer of CIENA CORP (CIEN).

Signal8 holds 35 ownership filings by Rothenstein David M, all Form 4s, filed between Sep 18, 2024 and Oct 19, 2026. Those filings report 82 transactions, from Sep 16, 2024 to Oct 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Rothenstein David M's filings is in FULTON, MD.

Recent filings by Rothenstein David M

Oct 15, 2026: Open-market sale of CIEN shares (Form 4, code S).
Sep 20, 2026: Tax withholdings of CIEN shares (5 lines, Form 4, code F).
Sep 15, 2026: Open-market sale of CIEN shares (Form 4, code S).
Aug 14, 2026: Open-market sale of CIEN shares (Form 4, code S).
Jul 15, 2026: Open-market sale of CIEN shares (Form 4, code S).

Other insiders filing for CIENA CORP (CIEN)

Graff Marc D., EVP & Chief Financial Officer
Gage Brodie, EVP & Chief Product & Tech
DiPerna Dino, EVP & Chief R&D Officer
SMITH GARY B, President & CEO
Kosaraju Sheela, EVP & Chief Legal Officer
Phipps Jason, EVP & Chief Customer Officer

How to read Form 4 transaction codes