Public ownership evidence

Glaukos Corporation (GKOS) Ownership Disclosures

Read GKOS insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Glaukos Corporation: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-07
Trade date
2026-10-05
Reporting owners
Navratil Tomas
Code
S
Shares
312
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001193125-26-417151
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read GKOS fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read GKOS fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-10-072026-10-05Navratil TomasS312Not reported
2026-10-072026-10-05Navratil TomasS327Not reported
2026-10-072026-10-05Navratil TomasS888Not reported
2026-09-282026-09-25Navratil TomasS1,083Not reported
2026-09-282026-09-25Navratil TomasS229Not reported
2026-09-282026-09-25Navratil TomasS136Not reported
2026-09-282026-09-25Navratil TomasS167Not reported
2026-09-182026-09-16Navratil TomasS4Not reported
2026-09-182026-09-16Navratil TomasS234Not reported
2026-09-182026-09-16Navratil TomasS120Not reported
2026-09-182026-09-16Navratil TomasS460Not reported
2026-09-182026-09-16Navratil TomasS191Not reported
2026-09-182026-09-16Navratil TomasS345Not reported
2026-09-182026-09-16Navratil TomasS103Not reported
2026-09-022026-08-28Navratil TomasS10Not reported
2026-09-022026-08-28Navratil TomasS6,091Not reported
2026-09-022026-08-28Navratil TomasS7,643Not reported
2026-08-212026-08-19Kliman Gilbert HS2,500Not reported
2026-08-142026-08-11Gilliam Joseph ES32,037Not reported
2026-08-142026-08-11Gilliam Joseph ES27,963Not reported
2026-08-122026-08-07Thurman Alex R.S20,000Not reported
2026-08-042026-07-31WEN LEANAS525Not reported
2026-07-222026-07-16Thurman Alex R.S10,000Not reported
2026-07-142026-07-09Thurman Alex R.S10,000Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2911$1,537None
Cornerstone Financial Management LLC2026-03-312026-08-297$754None
Cornerstone Financial Management LLC2025-12-312026-08-297$790None
Corient Private Wealth LP2026-06-302026-08-2857,046$7,972,749None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-265,400$754,704None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2564,570$9,024,303None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-259,024,303$64,570,000None
Assenagon Asset Management S.A.2026-06-302026-08-22108,736$15,196,943None
Archer Investment Corp2026-06-302026-08-201,594$222,777None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-201,855$259,255None
Ensign Peak Advisors, Inc2026-03-312026-08-193,321$357,539None
Ensign Peak Advisors, Inc2025-12-312026-08-194,566$515,547None
Ensign Peak Advisors, Inc2025-09-302026-08-1912,031$981,128None
Fulcrum Asset Management LLP2026-06-302026-08-1996$13,650None
Corient Private Wealth LP2026-06-302026-08-1857,048$7,973,029None
Jefferies Financial Group Inc.2026-06-302026-08-187,856$1,097,955None
Forum Finance Group S.A.2026-06-302026-08-15100$11,000None
EFG International AG2026-06-302026-08-1522$3,075None
EFG International AG2026-06-302026-08-1551,268$7,157,782None
Defilade Capital Management, L.P.2026-06-302026-08-1566,519$9,296,695None
SMA Capital LLC2026-06-302026-08-15197$27,533None
TORONTO DOMINION BANK2026-06-302026-08-15268,152$37,476,924None
SEI INVESTMENTS CO2026-06-302026-08-15119,290$16,671,970None
SEI INVESTMENTS CO2026-06-302026-08-152,035$284,770None
Murphy & Mullick Capital Management Corp2026-06-302026-08-1550$6,988None
Axxion S.A.2026-06-302026-08-151,500$209,640Put
Axxion S.A.2026-06-302026-08-151,900$265,544None
Federation des caisses Desjardins du Quebec2026-06-302026-08-15624$87,183None
Federation des caisses Desjardins du Quebec2026-06-302026-08-1575$10,482None
JPL Wealth Management, LLC2026-06-302026-08-1510$1,398None
JPL Wealth Management, LLC2026-06-302026-08-1555$7,687None
SHELTON CAPITAL MANAGEMENT2026-06-302026-08-151,559$217,886None
Susquehanna Portfolio Strategies, LLC2026-06-302026-08-15102,507$14,326,378None
Quarry LP2026-06-302026-08-1517$2,376None
XTX Topco Ltd2026-06-302026-08-152,655$371,063None
Prestige Wealth Management Group LLC2026-06-302026-08-1514$1,957None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15752,642$105,189,246None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15752,642$105,189,246None
Eversept Partners, LP2026-06-302026-08-1529,343$4,100,978None
OSAIC HOLDINGS, INC.2026-06-302026-08-151,623$226,830None
OSAIC HOLDINGS, INC.2026-06-302026-08-1530$4,193None
OSAIC HOLDINGS, INC.2026-06-302026-08-151,195$167,009None
QUADRANT CAPITAL GROUP LLC2026-06-302026-08-156,879$961,409None
Squarepoint Ops LLC2026-06-302026-08-1514,167$1,979,980None
MetLife Investment Management, LLC2026-06-302026-08-1533,540$4,687,550None
JANE STREET GROUP, LLC2026-06-302026-08-152,452$342,692None
JANE STREET GROUP, LLC2026-06-302026-08-1579$11,041None
JANE STREET GROUP, LLC2026-06-302026-08-15551,200$77,035,712Put
JANE STREET GROUP, LLC2026-06-302026-08-1516,300$2,278,088Call
State of Tennessee, Department of Treasury2026-06-302026-08-1521,526$3,008,474None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Corient Private Wealth LP ↗VIRGINIA RETIREMENT SYSTEMS ET Al ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Assenagon Asset Management S.A. ↗Archer Investment Corp ↗MERCER GLOBAL ADVISORS INC /ADV ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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