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Home/Insiders/Navratil Tomas

Navratil Tomas

Officer

Officer
Total trades
41
Bought (open market)
$0
Sold (open market)
$3.6M
Tickers traded
1
Navratil Tomas, Chief Development Officer at Glaukos Corporation (GKOS), has demonstrated a consistent pattern of selling activity over 28 reported transactions, with no recorded purchases. Since 2024, Navratil has exclusively divested GKOS shares, totaling approximately $1.71 million in aggregate sales. The transactions include a mix of open-market sales (coded "S") and dispositions under Rule 16b-3 (coded "F"), with the most significant sales occurring in September 2025, when Navratil sold $172,612 and $281,008 worth of shares on September 11. More recently, in March 2026, Navratil executed multiple dispositions, including a $267,916 transaction on March 24 and a $280,776 sale on March 23, alongside smaller sales totaling $101,078 on March 16. The filings also show several awards (coded "A")—likely stock grants or option exercises—with no associated dollar value reported, suggesting these were non-cash transactions. The absence of any buy activity, combined with the repeated sales, indicates a clear divestment trend. Notably, the largest dispositions have occurred in concentrated bursts, such as the September 2025 and March 2026 sales, rather than steady, incremental selling. All transactions involve GKOS, reflecting Navratil’s exclusive trading activity in his employer’s stock. The pattern aligns with typical executive stock liquidation, though the frequency and size of recent sales may warrant closer attention for shifts in holding behavior.

AI-assisted summary

12-month activity

Monthly buy vs sell totals from Navratil Tomas's Form 4 filings.

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$00
December 2025$0$02
January 2026$0$00
February 2026$0$01
March 2026$0$101K13
April 2026$0$246K6
May 2026$0$00
June 2026$0$201K2
July 2026$0$100K1
August 2026$0$2.5M3
September 2026$0$00

Recent trades

Most recent Form 4 filings by Navratil Tomas.

  • Navratil Tomassold10 shares ofGKOSat $182.5$2KAug 28 · filed Sep 1Details
  • Navratil Tomassold6,091 shares ofGKOSat $181.19$1.1MAug 28 · filed Sep 1Details
  • Navratil Tomassold7,643 shares ofGKOSat $180.25$1.4MAug 28 · filed Sep 1Details

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  • Navratil Tomassold716 shares ofGKOSat $139.06$100KJul 1 · filed Jul 8Details
  • Navratil Tomastax-withheld483 shares ofGKOSat $142.57$69KJun 25 · filed Jun 29Details
  • Navratil Tomassold1,537 shares ofGKOSat $130.68$201KJun 16 · filed Jun 18Details
  • Navratil Tomassold1,237 shares ofGKOSat $116.72$144KApr 10 · filed Apr 14Details
  • Navratil Tomassold210 shares ofGKOSat $117.45$25KApr 10 · filed Apr 14Details
  • Navratil Tomassold614 shares ofGKOSat $119.35$73KApr 10 · filed Apr 14Details
  • Navratil Tomassold32 shares ofGKOSat $120.23$4KApr 10 · filed Apr 14Details
  • Navratil Tomastax-withheld1,831 shares ofGKOSat $109.6$201KApr 2 · filed Apr 3Details
  • Navratil Tomastax-withheld1,146 shares ofGKOSat $109.6$126KApr 2 · filed Apr 3Details
  • Navratil Tomastax-withheld5,798 shares ofGKOSat $109.6$635KMar 31 · filed Apr 2Details
  • Navratil Tomasgranted12,774 shares ofGKOSat $0Mar 25 · filed Mar 27Details
  • Navratil Tomasgranted3,692 shares ofGKOSat $0Mar 25 · filed Mar 27Details
  • Navratil Tomasgranted11,693 shares ofGKOSat $0Mar 25 · filed Mar 27Details
  • Navratil Tomasgranted4,622 shares ofGKOSat $0Mar 25 · filed Mar 27Details
  • Navratil Tomastax-withheld2,546 shares ofGKOSat $105.23$268KMar 24 · filed Mar 25Details
  • Navratil Tomastax-withheld2,628 shares ofGKOSat $106.84$281KMar 23 · filed Mar 25Details
  • Navratil Tomassold299 shares ofGKOSat $98.21$29KMar 16 · filed Mar 19Details
  • View all 41 trades →