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SEC Form 4 reporting owner

Claflin Bruce L.

Claflin Bruce L. has filed 4 Form 4 transactions reported between March 26, 2026 and September 24, 2026, as Director of CIENA CORP and Director of IDEXX LABORATORIES INC /DE.

Name as filed: Claflin Bruce L.

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Claflin Bruce L. holds 59,122 shares of CIEN, worth $19.9M, 0.04% of the company.

As of their Sep 24, 2026 Form 4 (filed Sep 28, 2026) · the filing on SEC EDGAR · 50,843 direct, 8,279 indirect · valued at the Oct 26, 2026 close of $335.93 · 141.8M shares outstanding on Aug 28, 2026

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$1.0M
1 lines
Companies
2
with Form 4 filings
Latest transaction
Sep 24, 2026
transaction date

Roles and reported holdings

  • CIENCIENA CORP
    Mar 26, 2026 – Sep 24, 2026

    Director

    Held directly50,843 sh
    By spousal trust8,279 sh

    As of Sep 24, 2026 · Form 4

    24 months: $1.0M sold

  • IDXXIDEXX LABORATORIES INC /DE
    May 12, 2026

    Director

    No common-stock holding reported on a purchase, sale, gift or withholding line.

Transaction history

All 4 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 24, 2026CIENDirectorOpen-market saleCode S · indirect2,857$1.0M@ $355.91Form 4
May 12, 2026IDXXDirectorGrant or awardCode A · direct234—Form 4
May 12, 2026IDXXDirectorGrant or awardCode A · direct525—Form 4
Mar 26, 2026CIENDirectorGrant or awardCode A · direct605—Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares each ownership line is left at by the person’s latest Form 4, 4/A or 5: held directly, and through each trust or entity named on the filing. A second class of common stock that converts into the listed one counts as shares; options and restricted stock units are listed but not counted. Value uses the latest trade or close, and the share of the company uses the latest shares-outstanding count the company reported. Where a filing has not yet been read line by line, the figure comes from the latest direct and indirect lines that traded and is shown as “at least”.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.