Issued 2026-09-16 at $163.47 · now $163.47 (2026-09-16, +0.0% since)
Based on its own history, a month from the 2026-09-16 close, GKOS has typically landed between $136.72 and $199.49 — a range of −16.4% to +22.0% from the issuance price $163.47.
- Actual close
- Typical path (median)
- Middle 50% of outcomes
- 90% range
2,802 overlapping 1 month windows · 2015-06-25 – 2026-08-17 · basis climatology · forecast (batch). Probability up 53.9% (90% CI 51.7–56.1%, ≈1,408 obs).
The cone is anchored at the 2026-09-16 issuance close ($163.47) — the price the forecast resolves against on 2026-10-15, not the latest close. The drawn path shape is illustrative (bands widen with √t); every labeled number is real — the anchor, the scored batch p90/IQR endpoints, and the typical move.
Where GKOS has typically landed a month from the 2026-09-16 close of $163.47 — the range is history, not a prediction.
- now $163.47 (+0.0%)
- typicalThe typical outcome — half of similar past periods did better and half did worse (not an average, so a few wild periods don't skew it). $169.33 (+3.6%)
- middle 50%The central range of outcomes — half of similar past periods landed inside it, a quarter finished above, a quarter below. $155.64–$183.02
- 90% rangeA nine-in-ten range — in about nine of every ten similar past periods the outcome stayed within these bounds. $136.72–$199.49
Actual 1-month windows behind the coneiEvery overlapping 1-month window in this security's own price history was ranked by realized return; shown are the 3 worst and 3 best of 2,802 windows spanning 2015-06-25 to 2026-09-16. Not cherry-picked — these are the extremes of the full sample. Max drop / max rise are the deepest and highest points reached within each window. See /methodology.
| Start | Return | Max drop | Max rise |
|---|---|---|---|
| 3 worst | |||
| 2020-02-20 | −61.0% | −61.0% | +0.0% |
| 2020-02-19 | −57.4% | −57.4% | +0.0% |
| 2020-02-21 | −56.8% | −60.1% | +0.0% |
| 3 best | |||
| 2018-08-03 | +71.4% | −3.2% | +73.6% |
| 2018-08-06 | +69.9% | +0.0% | +79.3% |
| 2018-08-07 | +56.8% | −1.8% | +69.9% |
2,802 overlapping windows · 2015-06-25 – 2026-09-16 · not cherry-picked
Seasonality · by month iHow this security has tended to do in each calendar month historically — a frequency, never a prediction.
iFor each calendar month, the share of years this security closed higher than the month before, and the average month-over-month return, over ~12 years of its own price history. Cells are shaded by average return. This is historical frequency, not a prediction — no month is a signal.Jan
91%
+8.4%
n=11
Feb
64%
−0.6%
n=11
Mar
55%
−3.0%
n=11
Apr
55%
+4.0%
n=11
May
55%
−0.3%
n=11
Jun
91%
+13.3%
n=11
Jul
67%
+3.3%
n=12
Aug
50%
+5.2%
n=12
Sep
33%
−3.7%
n=12
Oct
55%
−1.5%
n=11
Nov
55%
+3.0%
n=11
Dec
55%
+1.4%
n=11
Up-frequency and average month-over-month return · historical frequency, not a prediction
Reported insider & political trades
Every Form 4 the people closest to this company have filed with the SEC — plotted against the share price, aggregated by month, and shown with the gap between when each trade happened and when it was disclosed. A public record, not advice.
| Date | Person | Role | Action | Shares @ price | Value | Ownership Δ | vs S&P 1m | vs S&P 6m | Owned after | Filing |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-28 | Navratil Tomas | officer | Sale | 7,643 @ $180.25 | $1.4M | −8.7% of holding | not yet — horizon still open | not yet — horizon still open | 79,991 | Form 4 · filed 4 days after the trade |
| 2026-08-28 | Navratil Tomas | officer | Sale | 6,091 @ $181.19 | $1.1M | −7.6% of holding | not yet — horizon still open | not yet — horizon still open | 73,900 | Form 4 · filed 4 days after the trade |
| 2026-08-28 | Navratil Tomas | officer | Sale | 10 @ $182.50 | $2K | −0.0% of holding | not yet — horizon still open | not yet — horizon still open | 73,890 | Form 4 · filed 4 days after the trade |
| 2026-08-19 | Kliman Gilbert H | director | Sale | 2,500 @ $190.00 | $475K | −6.3% of holding | not yet — horizon still open | not yet — horizon still open | 37,406 | Form 4 · filed 1 day after the trade |
| 2026-08-11 | Gilliam Joseph E | director | Sale | 32,037 @ $180.49 | $5.8M | −30.6% of holding | −4.7% | not yet — horizon still open | 72,588 | Form 4 · filed 2 days after the trade |
| 2026-08-11 | Gilliam Joseph E | director | Sale | 27,963 @ $178.89 | $5.0M | −21.1% of holding | −4.7% | not yet — horizon still open | 104,625 | Form 4 · filed 2 days after the trade |
| 2026-08-07 | Thurman Alex R. | officer | Sale | 20,000 @ $180.13 | $3.6M | −31.3% of holding | +3.7% | not yet — horizon still open | 43,906 | Form 4 · filed 4 days after the trade |
| 2026-07-31 | WEN LEANA | director | Sale | 525 @ $167.63 | $88K | −2.4% of holding | +5.0% | not yet — horizon still open | 21,092 | Form 4 · filed 3 days after the trade |
| 2026-07-16 | Thurman Alex R. | officer | Sale | 10,000 @ $160.00 | $1.6M | −18.6% of holding | +15.3% | not yet — horizon still open | 43,906 | Form 4 · filed 5 days after the trade |
| 2026-07-09 | Thurman Alex R. | officer | Sale | 10,000 @ $155.00 | $1.6M | −18.6% of holding | +13.2% | not yet — horizon still open | 43,681 | Form 4 · filed 4 days after the trade |
| 2026-07-06 | Thurman Alex R. | officer | Sale | 10,000 @ $150.00 | $1.5M | −18.6% of holding | +12.0% | not yet — horizon still open | 43,681 | Form 4 · filed 2 days after the trade |
| 2026-07-01 | Navratil Tomas | officer | Sale | 716 @ $139.06 | $100K | −0.8% of holding | +21.0% | not yet — horizon still open | 87,634 | Form 4 · filed 7 days after the trade |
| 2026-06-16 | Navratil Tomas | officer | Sale | 1,537 @ $130.68 | $201K | −1.7% of holding | +23.7% | not yet — horizon still open | 88,833 | Form 4 · filed 2 days after the trade |
| 2026-05-14 | Kliman Gilbert H | director | Sale | 5,000 @ $140.76 | $704K | −12.3% of holding | −9.3% | not yet — horizon still open | 35,528 | Form 4 · filed 4 days after the trade |
| 2026-05-11 | Kliman Gilbert H | director | Sale | 5,000 @ $135.00 | $675K | −12.3% of holding | −7.6% | not yet — horizon still open | 35,528 | Form 4 · filed 2 days after the trade |
| 2026-05-01 | Gilliam Joseph E | director | Sale | 19,573 @ $143.54 | $2.8M | −21.0% of holding | −26.4% | not yet — horizon still open | 73,419 | Form 4 · filed 3 days after the trade |
| 2026-05-01 | WEN LEANA | director | Sale | 1,700 @ $143.35 | $244K | −7.9% of holding | −26.4% | not yet — horizon still open | 19,739 | Form 4 · filed 3 days after the trade |
| 2026-04-30 | Thurman Alex R. | officer | Sale | 10,000 @ $140.00 | $1.4M | −18.6% of holding | −33.8% | not yet — horizon still open | 43,681 | Form 4 · filed 4 days after the trade |
| 2026-04-10 | Navratil Tomas | officer | Sale | 1,237 @ $116.72 | $144K | −1.3% of holding | +7.5% | not yet — horizon still open | 91,226 | Form 4 · filed 4 days after the trade |
| 2026-04-10 | Navratil Tomas | officer | Sale | 614 @ $119.35 | $73K | −0.7% of holding | +7.5% | not yet — horizon still open | 90,402 | Form 4 · filed 4 days after the trade |
| 2026-04-10 | Navratil Tomas | officer | Sale | 210 @ $117.45 | $25K | −0.2% of holding | +7.5% | not yet — horizon still open | 91,016 | Form 4 · filed 4 days after the trade |
| 2026-04-10 | Navratil Tomas | officer | Sale | 32 @ $120.23 | $4K | −0.0% of holding | +7.5% | not yet — horizon still open | 90,370 | Form 4 · filed 4 days after the trade |
| 2026-03-25 | Thurman Alex R. | officer | Sale | 2,511 @ $106.46 | $267K | −5.6% of holding | +2.1% | not yet — horizon still open | 41,967 | Form 4 · filed 2 days after the trade |
| 2026-03-24 | Thurman Alex R. | officer | Sale | 1,521 @ $105.24 | $160K | −3.2% of holding | +6.4% | not yet — horizon still open | 46,498 | Form 4 · filed 1 day after the trade |
| 2026-03-17 | Thurman Alex R. | officer | Sale | 625 @ $99.15 | $62K | −1.3% of holding | +13.3% | +45.8% | 49,249 | Form 4 · filed 2 days after the trade |
| 2026-03-16 | Navratil Tomas | officer | Sale | 460 @ $97.33 | $45K | −0.6% of holding | +17.4% | +59.7% | 74,202 | Form 4 · filed 3 days after the trade |
| 2026-03-16 | Navratil Tomas | officer | Sale | 299 @ $98.21 | $29K | −0.4% of holding | +17.4% | +59.7% | 73,903 | Form 4 · filed 3 days after the trade |
| 2026-03-16 | Navratil Tomas | officer | Sale | 272 @ $99.05 | $27K | −0.4% of holding | +17.4% | +59.7% | 73,631 | Form 4 · filed 3 days after the trade |
| 2026-02-19 | WEISNER AIMEE S | director | Sale | 6,471 @ $118.56 | $767K | −25.6% of holding | −8.8% | +45.9% | 18,806 | Form 4 · filed 4 days after the trade |
| 2026-02-19 | WEISNER AIMEE S | director | Sale | 5,242 @ $116.64 | $611K | −16.6% of holding | −8.8% | +45.9% | 26,411 | Form 4 · filed 4 days after the trade |
| 2026-02-19 | WEISNER AIMEE S | director | Sale | 2,153 @ $115.69 | $249K | −6.4% of holding | −8.8% | +45.9% | 31,653 | Form 4 · filed 4 days after the trade |
| 2026-02-19 | WEISNER AIMEE S | director | Sale | 1,134 @ $117.33 | $133K | −4.3% of holding | −8.8% | +45.9% | 25,277 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Stapley Marc | director | Sale | 4,325 @ $129.11 | $558K | −10.0% of holding | −3.4% | +14.2% | 38,749 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Stapley Marc | director | Sale | 3,892 @ $126.96 | $494K | −8.0% of holding | −3.4% | +14.2% | 44,745 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Stapley Marc | director | Sale | 3,812 @ $126.07 | $481K | −7.3% of holding | −3.4% | +14.2% | 48,637 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Gilliam Joseph E | director | Sale | 3,194 @ $129.28 | $413K | −3.3% of holding | −3.4% | +14.2% | 92,366 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Gilliam Joseph E | director | Sale | 3,100 @ $127.03 | $394K | −3.1% of holding | −3.4% | +14.2% | 97,358 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Gilliam Joseph E | director | Sale | 2,406 @ $126.10 | $303K | −2.3% of holding | −3.4% | +14.2% | 100,458 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Gilliam Joseph E | director | Sale | 1,798 @ $128.07 | $230K | −1.8% of holding | −3.4% | +14.2% | 95,560 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Stapley Marc | director | Sale | 1,671 @ $127.92 | $214K | −3.7% of holding | −3.4% | +14.2% | 43,074 | Form 4 · filed 4 days after the trade |
| 2026-01-22 | Stapley Marc | director | Sale | 1,300 @ $129.78 | $169K | −3.4% of holding | −3.4% | +14.2% | 37,449 | Form 4 · filed 4 days after the trade |
| 2026-01-21 | Gilliam Joseph E | director | Sale | 4,502 @ $124.65 | $561K | −4.6% of holding | −3.7% | +14.3% | 92,366 | Form 4 · filed 2 days after the trade |
| 2026-01-16 | Burns Thomas William | director | Sale | 186,945 @ $115.00 | $21.5M | −54.9% of holding | +1.4% | +18.6% | 153,775 | Form 4 · filed 4 days after the trade |
| 2026-01-08 | Burns Thomas William | director | Sale | 88,055 @ $115.00 | $10.1M | −36.4% of holding | −1.4% | +24.6% | 153,775 | Form 4 · filed 12 days after the trade |
| 2025-12-09 | Kliman Gilbert H | director | Sale | 5,000 @ $107.27 | $536K | −12.5% of holding | +3.7% | +7.6% | 34,905 | Form 4 · filed 2 days after the trade |
| 2025-11-25 | Thurman Alex R. | officer | Sale | 315 @ $105.00 | $33K | −0.6% of holding | +8.8% | −13.7% | 50,488 | Form 4 · filed 1 day after the trade |
| 2025-11-18 | Gilliam Joseph E | director | Sale | 19,340 @ $90.00 | $1.7M | −17.3% of holding | +21.1% | +38.6% | 92,366 | Form 4 · filed 2 days after the trade |
| 2025-09-22 | Navratil Tomas | officer | Sale | 276 @ $84.70 | $23K | −0.4% of holding | −11.0% | +25.8% | 76,390 | Form 4 · filed 2 days after the trade |
| 2025-09-22 | Navratil Tomas | officer | Sale | 218 @ $83.76 | $18K | −0.3% of holding | −11.0% | +25.8% | 76,666 | Form 4 · filed 2 days after the trade |
| 2025-09-22 | Navratil Tomas | officer | Sale | 23 @ $82.79 | $2K | −0.0% of holding | −11.0% | +25.8% | 76,884 | Form 4 · filed 2 days after the trade |
| 2025-09-11 | Navratil Tomas | officer | Sale | 3,194 @ $87.98 | $281K | −4.0% of holding | −5.2% | +9.6% | 77,417 | Form 4 · filed 1 day after the trade |
| 2025-09-11 | Navratil Tomas | officer | Sale | 1,948 @ $88.61 | $173K | −2.5% of holding | −5.2% | +9.6% | 75,469 | Form 4 · filed 1 day after the trade |
| 2025-03-25 | Thurman Alex R. | officer | Sale | 1,059 @ $106.56 | $113K | −1.9% of holding | −5.7% | −38.1% | 53,892 | Form 4 · filed 2 days after the trade |
| 2025-03-25 | Thurman Alex R. | officer | Sale | 430 @ $107.44 | $46K | −0.8% of holding | −5.7% | −38.1% | 53,462 | Form 4 · filed 2 days after the trade |
| 2025-03-25 | Thurman Alex R. | officer | Sale | 31 @ $108.14 | $3K | −0.1% of holding | −5.7% | −38.1% | 53,431 | Form 4 · filed 2 days after the trade |
| 2025-02-26 | Foley Mark J | director | Sale | 20,687 @ $120.72 | $2.5M | −27.6% of holding | −9.7% | −30.5% | 54,249 | Form 4 · filed 2 days after the trade |
| 2025-02-14 | Navratil Tomas | officer | Sale | 3,416 @ $147.14 | $503K | −4.5% of holding | −26.4% | −47.7% | 72,437 | Form 4 · filed 5 days after the trade |
| 2024-12-20 | Kliman Gilbert H | director | Sale | 10,000 @ $150.28 | $1.5M | −23.6% of holding | +3.3% | −37.1% | 32,336 | Form 4 · filed 3 days after the trade |
| 2024-12-20 | Gilliam Joseph E | director | Sale | 2,036 @ $149.54 | $304K | −1.9% of holding | +3.3% | −37.1% | 103,461 | Form 4 · filed 3 days after the trade |
| 2024-12-20 | Gilliam Joseph E | director | Sale | 1,292 @ $150.35 | $194K | −1.2% of holding | +3.3% | −37.1% | 102,169 | Form 4 · filed 3 days after the trade |
The vs-S&P columns are a labeled look-back on what the stock did after each filing, measured against the index over the same window. Descriptive history, not a claim about the person or a reason to trade.
219 award / exercise / gift records — not counted as purchases
Awards, option exercises, gifts and tax-withholding disposals are shown separately and never counted as open-market purchases or sales — they carry no conviction information.
| Date | Person | Role | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-19 | Kliman Gilbert H | director | Option exercise | 2,500 | 39,906 | Form 4 |
| 2026-08-19 | Kliman Gilbert H | director | Option exercise | 2,500 | 12,500 | Form 4 |
| 2026-08-11 | Gilliam Joseph E | director | Option exercise | 20,000 | 102,588 | Form 4 |
| 2026-08-11 | Gilliam Joseph E | director | Option exercise | 20,000 | 122,588 | Form 4 |
| 2026-08-11 | Gilliam Joseph E | director | Option exercise | 10,000 | 132,588 | Form 4 |
| 2026-08-11 | Gilliam Joseph E | director | Option exercise | 10,000 | 82,588 | Form 4 |
| 2026-08-11 | Gilliam Joseph E | director | Option exercise | 10,000 | 26,751 | Form 4 |
| 2026-08-11 | Gilliam Joseph E | director | Option exercise | 20,000 | 51,475 | Form 4 |
| 2026-08-11 | Gilliam Joseph E | director | Option exercise | 20,000 | 33,118 | Form 4 |
| 2026-08-07 | Thurman Alex R. | officer | Option exercise | 20,000 | 63,906 | Form 4 |
| 2026-08-07 | Thurman Alex R. | officer | Option exercise | 20,000 | 0 | Form 4 |
| 2026-07-16 | Thurman Alex R. | officer | Option exercise | 10,000 | 53,906 | Form 4 |
| 2026-07-16 | Thurman Alex R. | officer | Option exercise | 10,000 | 10,000 | Form 4 |
| 2026-07-09 | Thurman Alex R. | officer | Option exercise | 10,000 | 53,681 | Form 4 |
| 2026-07-09 | Thurman Alex R. | officer | Option exercise | 10,000 | 10,000 | Form 4 |
| 2026-07-06 | Thurman Alex R. | officer | Option exercise | 10,000 | 53,681 | Form 4 |
| 2026-07-06 | Thurman Alex R. | officer | Option exercise | 10,000 | 20,000 | Form 4 |
| 2026-06-25 | Burns Thomas William | director | Withheld for tax | 4,059 | 68,967 | Form 4 |
| 2026-06-25 | Gilliam Joseph E | director | Withheld for tax | 1,056 | 72,363 | Form 4 |
| 2026-06-25 | Navratil Tomas | officer | Withheld for tax | 483 | 88,350 | Form 4 |
| 2026-05-28 | Stapley Marc | director | Award / grant | 2,987 | 2,987 | Form 4 |
| 2026-05-28 | Foley Mark J | director | Award / grant | 1,878 | 60,267 | Form 4 |
| 2026-05-28 | Foley Mark J | director | Award / grant | 2,987 | 2,987 | Form 4 |
| 2026-05-28 | WEISNER AIMEE S | director | Award / grant | 1,878 | 20,684 | Form 4 |
| 2026-05-28 | WEISNER AIMEE S | director | Award / grant | 2,987 | 2,987 | Form 4 |
| 2026-05-28 | Kliman Gilbert H | director | Award / grant | 1,878 | 37,406 | Form 4 |
| 2026-05-28 | Kliman Gilbert H | director | Award / grant | 2,987 | 2,987 | Form 4 |
| 2026-05-28 | Hoffmeister David F | director | Award / grant | 1,878 | 49,549 | Form 4 |
| 2026-05-28 | Hoffmeister David F | director | Award / grant | 2,987 | 2,987 | Form 4 |
| 2026-05-28 | Stapley Marc | director | Award / grant | 1,878 | 39,327 | Form 4 |
| 2026-05-28 | Torres Denice | director | Award / grant | 1,878 | 24,212 | Form 4 |
| 2026-05-28 | Torres Denice | director | Award / grant | 2,987 | 2,987 | Form 4 |
| 2026-05-28 | WEN LEANA | director | Award / grant | 1,878 | 21,617 | Form 4 |
| 2026-05-28 | WEN LEANA | director | Award / grant | 2,987 | 2,987 | Form 4 |
| 2026-05-26 | Hoffmeister David F | director | Option exercise | 15,000 | 47,671 | Form 4 |
| 2026-05-26 | Hoffmeister David F | director | Option exercise | 15,000 | 0 | Form 4 |
| 2026-05-14 | Kliman Gilbert H | director | Option exercise | 5,000 | 0 | Form 4 |
| 2026-05-14 | Kliman Gilbert H | director | Option exercise | 5,000 | 40,528 | Form 4 |
| 2026-05-11 | Kliman Gilbert H | director | Option exercise | 5,000 | 40,528 | Form 4 |
| 2026-05-11 | Kliman Gilbert H | director | Option exercise | 5,000 | 5,000 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Across 2012–2021, stocks where a CEO, C-suite officer, or director had recently made an open-market common-stock purchase ran about +28 bp per month above the universe average (n=34,268 stock-weeks). A historical tendency, not a prediction.
Congressional disclosures
No congressional trades disclosed for this company.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.