// company-profile
Geron Corp
GERNExchangeNasdaqSectorPharmaceutical PreparationsInc.DEFilings91Insiders21
// api This Geron Corp insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Geron Corp insiders bought $8K across 7 transactions with no open-market sales.
- Most active insider: Spiegel Robert J. with 2 transactions totaling $8K.
- Largest single purchase: $8K by Spiegel Robert J. on Mar 31, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Geron Corp as of 2026-03-31
Total reported AUM
$725.5M
QoQ change
+28.1%
Reporting period
2026-03-31
#1
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
$95.0M
63.8M shares
#2
Soleus Capital Management, L.P.
CIK 1802630
$61.8M
41.5M shares
#3
Deep Track Capital, LP
CIK 1856083
$47.3M
31.7M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 20, 2026 | Spiegel Robert J. | GERN | Award | 220,000 | $0.00 | $0K |
| May 20, 2026 | Molineaux Susan | GERN | Award | 220,000 | $0.00 | $0K |
| May 20, 2026 | O'Farrell Elizabeth G. | GERN | Award | 220,000 | $0.00 | $0K |
| May 20, 2026 | Bir Dawn Carter | GERN | Award | 220,000 | $0.00 | $0K |
| May 20, 2026 | McDonald John F | GERN | Award | 220,000 | $0.00 | $0K |
45 more transactions hidden
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