Bruce L. Claflin insider trades: Ciena (CIEN) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Bruce reports to the SEC
Open-market buys and sales
42 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 24, 2026 | CIEN | ↓ Sell | 2,857 | $355.91 | $1.0M | By spousal trust | Sep 28, 2026 (4d) |
| Sep 24, 2025 | CIEN | ↓ Sell | 8,461 | $140.12 | $1.2M | Direct | Sep 26, 2025 (2d) |
| Jan 6, 2025 | CIEN | ↓ Sell | 16,912 | $84.96 | $1.4M | Direct | Jan 8, 2025 (2d) |
| May 17, 2024 | IDXX | ↓ Sell | 200 | $540.80 | $108K | Direct | May 20, 2024 (3d) |
| Feb 16, 2021 | IDXX | ↓ Sell | 7,331 | $536.91 | $3.9M | Direct | Feb 18, 2021 (2d) |
| Aug 18, 2020 | IDXX | ↓ Sell | 6,740 | $383.95 | $2.6M | Direct | Aug 18, 2020 (0d) |
| Jul 8, 2020 | CIEN | ↓ Sell10b5-1 | 18,600 | $56.22 | $1.0M | Direct | Jul 9, 2020 (1d) |
| Dec 12, 2019 | CIEN | ↓ Sell10b5-1 | 5,262 | $40.00 | $210K | Direct | Dec 13, 2019 (1d) |
| Aug 3, 2018 | IDXX | ↑ Buy | 415 | $242.12 | $100K | Direct | Aug 7, 2018 (4d) |
| Feb 7, 2018 | IDXX | ↑ Buy | 1,000 | $179.58 | $180K | Direct | Feb 9, 2018 (2d) |
| Apr 10, 2017 | AMD | ↓ Sell10b5-1 | 20,000 | $13.33 | $267K | Direct | Apr 12, 2017 (2d) |
| Mar 10, 2017 | AMD | ↓ Sell10b5-1 | 20,000 | $13.58 | $272K | Direct | Mar 14, 2017 (4d) |
| Feb 10, 2017 | AMD | ↓ Sell | 20,000 | $13.51 | $270K | Direct | Feb 14, 2017 (4d) |
| Jan 10, 2017 | AMD | ↓ Sell | 20,000 | $11.51 | $230K | Direct | Jan 12, 2017 (2d) |
| Dec 12, 2016 | AMD | ↓ Sell | 20,000 | $10.76 | $215K | Direct | Dec 14, 2016 (2d) |
| Feb 22, 2016 | CIEN | ↓ Sell10b5-1 | 800 | $20.00 | $16K | Direct | Feb 24, 2016 (2d) |
| Dec 21, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $20.00 | $8K | Direct | Dec 22, 2015 (1d) |
| Nov 12, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $23.54 | $9K | Direct | Nov 16, 2015 (4d) |
| Oct 12, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $22.76 | $9K | Direct | Oct 13, 2015 (1d) |
| Sep 14, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $22.17 | $9K | Direct | Sep 16, 2015 (2d) |
| Aug 12, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $22.86 | $9K | Direct | Aug 14, 2015 (2d) |
| Jul 13, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $23.92 | $10K | Direct | Jul 13, 2015 (0d) |
| Jun 12, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $25.33 | $10K | Direct | Jun 15, 2015 (3d) |
| May 12, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $21.94 | $9K | Direct | May 14, 2015 (2d) |
| Apr 13, 2015 | CIEN | ↓ Sell10b5-1 | 400 | $20.00 | $8K | Direct | Apr 14, 2015 (1d) |
| Mar 12, 2014 | CIEN | ↓ Sell10b5-1 | 400 | $22.88 | $9K | Direct | Mar 14, 2014 (2d) |
| Feb 12, 2014 | CIEN | ↓ Sell10b5-1 | 400 | $22.75 | $9K | Direct | Feb 13, 2014 (1d) |
| Jan 13, 2014 | CIEN | ↓ Sell10b5-1 | 400 | $22.91 | $9K | Direct | Jan 14, 2014 (1d) |
| Dec 12, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $22.20 | $9K | Direct | Dec 13, 2013 (1d) |
| Nov 12, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $23.30 | $9K | Direct | Nov 14, 2013 (2d) |
| Oct 14, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $26.14 | $10K | Direct | Oct 15, 2013 (1d) |
| Sep 12, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $24.83 | $10K | Direct | Sep 16, 2013 (4d) |
| Aug 12, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $22.50 | $9K | Direct | Aug 14, 2013 (2d) |
| Jul 12, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $21.71 | $9K | Direct | Jul 15, 2013 (3d) |
| Jun 12, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $20.22 | $8K | Direct | Jun 14, 2013 (2d) |
| Jun 10, 2013 | CIEN | ↓ Sell10b5-1 | 400 | $20.00 | $8K | Direct | Jun 12, 2013 (2d) |
| Apr 24, 2012 | AMD | ↓ Sell | 2,500 | $7.44 | $19K | Direct | Apr 26, 2012 (2d) |
| Jun 2, 2011 | CIEN | ↓ Sell | 400 | $25.59 | $10K | Direct | Jun 2, 2011 (0d) |
| May 3, 2011 | CIEN | ↓ Sell | 400 | $27.49 | $11K | Direct | May 4, 2011 (1d) |
| Apr 4, 2011 | CIEN | ↓ Sell | 400 | $25.46 | $10K | Direct | Apr 6, 2011 (2d) |
| Mar 2, 2011 | CIEN | ↓ Sell | 400 | $26.43 | $11K | Direct | Mar 4, 2011 (2d) |
| Feb 2, 2011 | CIEN | ↓ Sell | 400 | $22.99 | $9K | Direct | Feb 3, 2011 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other CIEN insiders
Open-market trades in the last 12 months
About Bruce L. Claflin's insider trades
Bruce L. Claflin is a director at Ciena (CIEN). Since Feb 2, 2011, Bruce has reported 2 open-market purchases worth $280K and 40 sales worth $13.0M on SEC Form 4. In the last 12 months: 1 sale ($1.0M).
25 sales (15% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (42 filings), option exercises (25 filings), gifts (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every CIEN insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.