Joseph E Gilliam insider trades: GLAUKOS (GKOS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Joseph reports to the SEC
Open-market buys and sales
43 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 11, 2026 | GKOS | ↓ Sell | 60,000 | $179.74 | $10.8M | Direct | Aug 13, 2026 (2d) |
| May 1, 2026 | GKOS | ↓ Sell | 19,573 | $143.54 | $2.8M | Direct | May 4, 2026 (3d) |
| Jan 22, 2026 | GKOS | ↓ Sell | 10,498 | $127.68 | $1.3M | Direct | Jan 26, 2026 (4d) |
| Jan 21, 2026 | GKOS | ↓ Sell | 4,502 | $124.65 | $561K | Direct | Jan 23, 2026 (2d) |
| Nov 18, 2025 | GKOS | ↓ Sell | 19,340 | $90.00 | $1.7M | Direct | Nov 20, 2025 (2d) |
| Dec 20, 2024 | GKOS | ↓ Sell | 3,328 | $149.85 | $499K | Direct | Dec 23, 2024 (3d) |
| Oct 30, 2024 | GKOS | ↓ Sell | 2,275 | $138.97 | $316K | Direct | Nov 1, 2024 (2d) |
| Aug 21, 2024 | GKOS | ↓ Sell | 5,000 | $129.36 | $647K | Direct | Aug 23, 2024 (2d) |
| Jul 5, 2024 | GKOS | ↓ Sell | 2,250 | $121.39 | $273K | Direct | Jul 9, 2024 (4d) |
| Jun 3, 2024 | GKOS | ↓ Sell | 2,500 | $113.50 | $284K | Direct | Jun 5, 2024 (2d) |
| May 10, 2024 | GKOS | ↓ Sell | 2,395 | $110.56 | $265K | Direct | May 14, 2024 (4d) |
| May 6, 2024 | GKOS | ↓ Sell | 105 | $110.36 | $12K | Direct | May 8, 2024 (2d) |
| May 2, 2024 | GKOS | ↓ Sell | 2,059 | $105.52 | $217K | Direct | May 6, 2024 (4d) |
| Apr 8, 2024 | GKOS | ↓ Sell | 59,801 | $100.47 | $6.0M | Direct | Apr 10, 2024 (2d) |
| Apr 5, 2024 | GKOS | ↓ Sell | 2,457 | $96.81 | $238K | Direct | Apr 9, 2024 (4d) |
| Apr 4, 2024 | GKOS | ↓ Sell | 400 | $96.59 | $39K | Direct | Apr 5, 2024 (1d) |
| Feb 23, 2024 | GKOS | ↓ Sell | 140,245 | $92.14 | $12.9M | Direct | Feb 27, 2024 (4d) |
| Feb 12, 2024 | GKOS | ↓ Sell | 1,512 | $96.80 | $146K | Direct | Feb 14, 2024 (2d) |
| Feb 9, 2024 | GKOS | ↓ Sell | 5,631 | $96.14 | $541K | Direct | Feb 12, 2024 (3d) |
| Jan 29, 2024 | GKOS | ↓ Sell | 9,476 | $94.12 | $892K | Direct | Jan 31, 2024 (2d) |
| Jan 22, 2024 | GKOS | ↓ Sell | 524 | $94.01 | $49K | Direct | Jan 24, 2024 (2d) |
| Jan 16, 2024 | GKOS | ↓ Sell | 4,890 | $89.17 | $436K | Direct | Jan 18, 2024 (2d) |
| Jan 12, 2024 | GKOS | ↓ Sell | 110 | $89.01 | $10K | Direct | Jan 16, 2024 (4d) |
| Dec 21, 2023 | GKOS | ↓ Sell | 25,000 | $84.80 | $2.1M | Direct | Dec 22, 2023 (1d) |
| Jul 14, 2023 | GKOS | ↓ Sell | 42,099 | $78.34 | $3.3M | Direct | Jul 18, 2023 (4d) |
| Jul 12, 2023 | GKOS | ↓ Sell | 2,700 | $73.09 | $197K | Direct | Jul 14, 2023 (2d) |
| May 6, 2021 | GKOS | ↓ Sell | 5,000 | $82.22 | $411K | Direct | May 7, 2021 (1d) |
| May 3, 2021 | GKOS | ↓ Sell | 20,000 | $93.53 | $1.9M | Direct | May 5, 2021 (2d) |
| Mar 15, 2021 | GKOS | ↓ Sell | 5,000 | $87.88 | $439K | Direct | Mar 17, 2021 (2d) |
| Feb 9, 2021 | GKOS | ↓ Sell | 13,750 | $96.58 | $1.3M | Direct | Feb 11, 2021 (2d) |
| Feb 12, 2020 | GKOS | ↓ Sell | 3,750 | $68.50 | $257K | Direct | Feb 14, 2020 (2d) |
| Sep 30, 2019 | GKOS | ↓ Sell | 4,631 | $59.75 | $277K | Direct | Oct 2, 2019 (2d) |
| Sep 12, 2019 | GKOS | ↓ Sell | 6,250 | $70.40 | $440K | Direct | Sep 12, 2019 (0d) |
| Aug 26, 2019 | GKOS | ↓ Sell | 4,631 | $59.16 | $274K | Direct | Aug 28, 2019 (2d) |
| Jul 22, 2019 | GKOS | ↓ Sell | 10,346 | $75.41 | $780K | Direct | Jul 24, 2019 (2d) |
| Jun 17, 2019 | GKOS | ↓ Sell | 8,750 | $74.22 | $649K | Direct | Jun 19, 2019 (2d) |
| Jun 12, 2019 | GKOS | ↓ Sell | 2,500 | $73.25 | $183K | Direct | Jun 14, 2019 (2d) |
| May 16, 2019 | GKOS | ↓ Sell | 3,647 | $68.50 | $250K | Direct | May 17, 2019 (1d) |
| May 13, 2019 | GKOS | ↓ Sell | 2,603 | $65.14 | $170K | Direct | May 15, 2019 (2d) |
| Feb 19, 2019 | GKOS | ↓ Sell | 5,000 | $70.03 | $350K | Direct | Feb 21, 2019 (2d) |
| Nov 28, 2018 | GKOS | ↓ Sell | 5,000 | $60.03 | $300K | Direct | Nov 29, 2018 (1d) |
| Nov 26, 2018 | GKOS | ↓ Sell | 2,100 | $58.37 | $123K | Direct | Nov 27, 2018 (1d) |
| Nov 22, 2017 | GKOS | ↑ Buy | 2,100 | $23.84 | $50K | Direct | Nov 27, 2017 (5d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other GKOS insiders
Open-market trades in the last 12 months
About Joseph E Gilliam's insider trades
Joseph E Gilliam is President & COO at GLAUKOS (GKOS). Since Nov 22, 2017, Joseph has reported 1 open-market purchase worth $50K and 42 sales worth $54.7M on SEC Form 4. In the last 12 months: 5 sales ($17.2M).
Their filings also include option exercises (36 filings), shares withheld for taxes (30 filings), grants and awards (22 filings), other transactions (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 GKOS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.