Public ownership evidence

Geron Corp (GERN) Ownership Disclosures

Read GERN 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

Geron Corp: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-01
Trade date
2026-09-30
Reporting owners
Spiegel Robert J.
Code
A
Shares
6,351
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 0001492256-26-000009
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 GERN fundamentals

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

Read GERN 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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2026-10-012026-09-30Spiegel Robert J.A6,351Not 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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Alternative Investment Advisors, LLC.2026-06-302026-09-0139,278$50,276None
Corient Private Wealth LP2026-06-302026-08-2834,455$44,102None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25542,133$693,930None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25693,930$542,133,000None
Nantahala Capital Management, LLC2026-06-302026-08-2012,225,000$15,648,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2061,908$79,243None
Corient Private Wealth LP2026-06-302026-08-1835,167$45,013None
Seven Fleet Capital Management LP2026-06-302026-08-181,057,228$1,353,252None
TORONTO DOMINION BANK2026-06-302026-08-154,235,000$5,420,800None
SummitTX Capital, L.P.2026-06-302026-08-15657,024$840,991None
Graham Capital Management, L.P.2026-06-302026-08-15107,622$137,756None
SEI INVESTMENTS CO2026-06-302026-08-1533,408$42,762None
SEI INVESTMENTS CO2026-06-302026-08-15641$810None
Rafferty Asset Management, LLC2026-06-302026-08-15606,440$776,243None
Basecamp Wealth Advisors LLC2026-06-302026-08-15350$448None
Polymer Capital Management (US) LLC2026-06-302026-08-1582,499$105,599None
Quarry LP2026-06-302026-08-15999$1,279None
ADAR1 Capital Management, LLC2026-06-302026-08-15505,817$647,446None
Kynam Capital Management, LP2026-06-302026-08-156,836,318$8,750,487None
XTX Topco Ltd2026-06-302026-08-15463,897$593,788None
Frisch Financial Group, Inc.2026-06-302026-08-1519,025$24,352None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-154,284,662$5,484,367None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-154,284,662$5,484,367None
ExodusPoint Capital Management, LP2026-06-302026-08-152,526,145$3,233,466None
Qube Research & Technologies Ltd2026-06-302026-08-153,361,584$4,302,828None
Eversept Partners, LP2026-06-302026-08-1518,717,422$23,958,300None
OSAIC HOLDINGS, INC.2026-06-302026-08-155,300$6,784None
OSAIC HOLDINGS, INC.2026-06-302026-08-1522,970$29,402None
OSAIC HOLDINGS, INC.2026-06-302026-08-1583,154$106,434None
Schonfeld Strategic Advisors LLC2026-06-302026-08-15135,350$173,246None
Squarepoint Ops LLC2026-06-302026-08-15534,461$684,110None
Man Group plc2026-06-302026-08-15696,669$891,736None
MetLife Investment Management, LLC2026-06-302026-08-15327,983$419,818None
JANE STREET GROUP, LLC2026-06-302026-08-1534,600$44,288Put
JANE STREET GROUP, LLC2026-06-302026-08-15192,900$246,912Call
EVENTIDE ASSET MANAGEMENT, LLC2026-06-302026-08-1528,050$36,465None
Legal & General Group Plc2026-06-302026-08-15174,584$223,467None
Legal & General Group Plc2026-06-302026-08-1580,717$103,318None
Legal & General Group Plc2026-06-302026-08-1554,246$69,435None
DRW Securities, LLC2026-06-302026-08-15111,450$142,656None
Verition Fund Management LLC2026-06-302026-08-15200,000$256,000Call
Verition Fund Management LLC2026-06-302026-08-15173,689$222,322None
Verition Fund Management LLC2026-06-302026-08-15200,000$256,000Call
Verition Fund Management LLC2026-06-302026-08-15173,689$222,322None
Jasper Ridge Partners, L.P.2026-06-302026-08-1520,995$26,874None
GTS SECURITIES LLC2026-06-302026-08-1523,772$30,428None
MOORE CAPITAL MANAGEMENT, LP2026-06-302026-08-151,191,941$1,525,684None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15106,400$136,192Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15594,300$760,704Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-151,547,239$1,980,466None

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

Alternative Investment Advisors, LLC. ↗Corient Private Wealth LP ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Nantahala Capital Management, LLC ↗MERCER GLOBAL ADVISORS INC /ADV ↗Corient Private Wealth LP ↗Seven Fleet Capital Management LP ↗TORONTO DOMINION BANK ↗SummitTX Capital, L.P. ↗

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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