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Tomas Navratil

GKOS
CHIEF DEVELOPMENT OFFICER · GLAUKOS CORP · CIK 0001920053
FILING MIX · LIFETIME24%/76%
BUYS
20
SELLS
62
TOTAL VALUE
$6.15M
COMPANIES
1
ACTIVE SINCE
Apr 2022
HOLDINGS NOW
88,350
AVG SELL PX
$99.62
TRADE KIND
SHOWING 82 / 82
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
13 backtested trades · 8 horizons · 36 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Tomas Navratil, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d13+46.15%+1.49%+0.79%+0.70%+2.69%—
14d13+23.08%+0.58%+0.26%+0.32%-0.71%—
30d13+46.15%+4.61%+3.17%+1.45%+7.49%—
60d13+7.69%+12.04%+4.63%+7.41%-2.62%—
90d13(4 pending)+11.11%+22.82%+5.22%+17.61%+19.74%—
180d13(7 pending)+16.67%+8.97%+0.64%+8.33%+18.52%—
1y13(12 pending)+100.00%-28.54%+12.15%-40.70%-40.70%—
2y13(13 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
GKOS · 88,350 shares · as of Jun 25, 2026
025,31050,61975,929101,2382023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 20 buys / 62 sellsCOVERAGE · 17 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
483$142.57$68.9K88,350Jun 25, 2026Jun 29, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
1,537$130.68$200.9K88,833Jun 16, 2026Jun 18, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
614$119.35$73.3K90,402Apr 10, 2026Apr 14, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
210$117.45$24.7K91,016Apr 10, 2026Apr 14, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
1,237$116.72$144.4K91,226Apr 10, 2026Apr 14, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
32$120.23$3.8K90,370Apr 10, 2026Apr 14, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,146$109.60$125.6K94,294Apr 2, 2026Apr 3, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,831$109.60$200.7K92,463Apr 2, 2026Apr 3, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
5,798$109.60$635.5K95,440Mar 31, 2026Apr 2, 2026 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
11,693——84,772Mar 25, 2026Mar 27, 2026 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
12,774——101,238Mar 25, 2026Mar 27, 2026 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
4,622——73,079Mar 25, 2026Mar 27, 2026 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
3,692——88,464Mar 25, 2026Mar 27, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
2,546$105.23$267.9K68,457Mar 24, 2026Mar 25, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
2,628$106.84$280.8K71,003Mar 23, 2026Mar 25, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
460$97.33$44.8K74,202Mar 16, 2026Mar 19, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
299$98.21$29.4K73,903Mar 16, 2026Mar 19, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
958$98.94$94.8K74,662Mar 16, 2026Mar 19, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
272$99.05$26.9K73,631Mar 16, 2026Mar 19, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,074$97.02$104.2K75,620Mar 13, 2026Mar 17, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
361$112.10$40.5K76,694Mar 5, 2026Mar 9, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
396$119.17$47.2K77,055Feb 24, 2026Feb 26, 2026 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
510$114.24$58.3K77,451Dec 30, 2025Dec 31, 2025 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
2,054——77,961Dec 11, 2025Dec 15, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
483$84.69$40.9K75,907Sep 23, 2025Sep 24, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
23$82.79$1.9K76,884Sep 22, 2025Sep 24, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
276$84.70$23.4K76,390Sep 22, 2025Sep 24, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
218$83.76$18.3K76,666Sep 22, 2025Sep 24, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
510$83.47$42.6K76,907Sep 19, 2025Sep 22, 2025 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
1,948——77,417Sep 18, 2025Sep 22, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
1,948$88.61$172.6K75,469Sep 11, 2025Sep 12, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
3,194$87.98$281.0K77,417Sep 11, 2025Sep 12, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
483$96.97$46.8K80,611May 27, 2025May 28, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
510$88.24$45.0K81,094May 7, 2025May 9, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
484$97.09$47.0K81,604Apr 1, 2025Apr 2, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
510$98.42$50.2K82,088Mar 31, 2025Apr 2, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
5,112$107.61$550.1K84,428Mar 25, 2025Mar 27, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,830$96.60$176.8K82,598Mar 25, 2025Mar 27, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
958$102.19$97.9K89,540Mar 17, 2025Mar 17, 2025 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
12,422——90,498Mar 13, 2025Mar 17, 2025 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
1,948——74,385Mar 13, 2025Mar 17, 2025 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
3,691——78,076Mar 13, 2025Mar 17, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE10b5-1
10b5-1 plan
3,416$147.14$502.6K72,437Feb 14, 2025Feb 19, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,185$149.68$177.4K75,853Jan 6, 2025Jan 8, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
255$151.16$38.5K77,038Dec 31, 2024Jan 2, 2025 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
2,054——77,293Dec 30, 2024Jan 2, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
484$138.93$67.2K75,239Dec 20, 2024Jan 2, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
509$145.14$73.9K75,723Dec 20, 2024Jan 2, 2025 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
510$130.07$66.3K76,232Oct 15, 2024Oct 16, 2024 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
4,108——76,742Sep 19, 2024Sep 23, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
520$120.73$62.8K72,634Aug 6, 2024Aug 8, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
260$92.69$24.1K73,154Jun 24, 2024Jun 26, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
260$93.57$24.3K73,414Jun 24, 2024Jun 26, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
494$93.10$46.0K73,674Apr 1, 2024Apr 3, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
2,418$88.08$213.0K76,771Mar 28, 2024Apr 1, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
2,603$88.72$230.9K74,168Mar 28, 2024Apr 1, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
459$87.16$40.0K79,189Mar 25, 2024Mar 27, 2024 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
1,950——67,546Mar 14, 2024Mar 18, 2024 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
11,075——79,648Mar 14, 2024Mar 18, 2024 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
1,027——68,573Mar 14, 2024Mar 18, 2024 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,209$77.08$93.2K65,596Jan 12, 2024Jan 16, 2024 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
1,027——66,805Dec 8, 2023Dec 12, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
509$68.83$35.0K65,778Nov 10, 2023Dec 12, 2023 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
2,052——66,287Sep 14, 2023Sep 18, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
483$74.72$36.1K64,235Sep 8, 2023Sep 12, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
178$49.31$8.8K64,718May 4, 2023May 5, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
445$48.69$21.7K64,896Apr 17, 2023Apr 19, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
338$49.51$16.7K65,341Apr 6, 2023Apr 10, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,776$49.35$87.6K65,679Mar 24, 2023Mar 28, 2023 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
23,387——63,861Mar 22, 2023Mar 24, 2023 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
3,594——67,455Mar 22, 2023Mar 24, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
178$48.51$8.6K40,474Mar 1, 2023Mar 2, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
356$50.26$17.9K40,652Feb 15, 2023Feb 15, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
356$46.15$16.4K41,008Jan 26, 2023Jan 30, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
885$43.88$38.8K41,364Jan 26, 2023Jan 30, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
389$45.17$17.6K42,249Jan 11, 2023Jan 30, 2023 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
1,299$43.88$57.0K42,638Jan 11, 2023Jan 30, 2023 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
5,135——43,937Dec 15, 2022Dec 19, 2022 ↗View →
GKOS
GLAUKOS CORP
SALE
CHIEF DEVELOPMENT OFFICER
338$53.41$18.1K38,802Nov 25, 2022Dec 5, 2022 ↗View →
GKOS
GLAUKOS CORP
PURCHASEGRANT
Stock grant
1,949——39,140Sep 15, 2022Dec 5, 2022 ↗View →
GKOS
GLAUKOS CORP
SALE
Chief Development Officer
338$60.47$20.4K37,191Apr 19, 2022Apr 21, 2022 ↗View →
GKOS
GLAUKOS CORP
SALE
Chief Development Officer
337$60.78$20.5K37,529Apr 1, 2022Apr 5, 2022 ↗View →
Other insiders · GKOS
Loading peer insiders…
About this filer
CIK 0001920053
ROLE
CHIEF DEVELOPMENT OFFICER
PRIMARY
GKOS
COMPANIES
1
ACTIVE SINCE
Apr 2022
MARKETPEEL · /INSIDER/0001920053DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

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