Marc D. Graff insider trades: Ciena (CIEN) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Marc reports to the SEC
Open-market buys and sales
3 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | CIEN | ↓ Sell10b5-1 | 97 | $355.19 | $34K | Direct | Oct 6, 2026 (5d) |
| Aug 14, 2026 | CIEN | ↓ Sell10b5-1 | 4,995 | $430.72 | $2.2M | Direct | Aug 18, 2026 (4d) |
| Jul 1, 2026 | CIEN | ↓ Sell10b5-1 | 126 | $466.20 | $59K | Direct | Jul 6, 2026 (5d) |
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 Marc D. Graff's insider trades
Marc D. Graff is EVP & Chief Financial Officer at Ciena (CIEN). Since Jul 1, 2026, Marc has reported no open-market purchases and 3 sales worth $2.2M on SEC Form 4. In the last 12 months: 3 sales ($2.2M).
3 sales (100% 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 shares withheld for taxes (5 filings), grants and awards (2 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.