Stocks › MPLT
MapLight Therapeutics MPLT
US equityMarket cap rank #3724
$6.93 +$0.71 (+11.41%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $7.60 +9.67%
Open$6.24
Prev close$6.22
Day range$6.06 – $6.93
Volume502.0K
Market cap$385.14M
P/E (TTM)–
Dividend yield–
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership94.2%-7.07 pts vs. prior quarter
Institutions holding125-3 vs. prior quarter
Insider trades (recent)26 buys / 24 sellsNet buying
Short interest5.98% of floatDays to cover 8.3 · as of 15 Oct 2026
Short-sale volume share22.1%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$1.05M (7 inflow days, 13 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 67.8% of shares outstanding.
Largest holders
By investor type
Reported short interest has fallen from 7.90% to 5.98% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Christopher Kroeger | Individual/Insider | 2026/Q3 | +167,332 | 0.5% |
| Jonathan Gillis | Individual/Insider | 2026/Q3 | +142,315 | 0.3% |
| Kristopher Hanson | Individual/Insider | 2026/Q3 | +128,024 | 0.2% |
| Catalyst4, Inc | Private Company | 2026/Q3 | +5,609,225 | 45.5% |
| Chen's Group International Limited | Private Company | 2026/Q3 | +1,628,722 | 2.9% |
| Forbion Capital Partners B.V. | VC/PE Fund | 2026/Q3 | +1,201,928 | 8.0% |
| Christopher Kroeger | Individual/Insider | 2026/Q3 | +145,966 | 0.5% |
| T. Rowe Price Group, Inc. | Mutual Fund | 2026/Q3 | +954,397 | 7.6% |
| Paradigm Biocapital Advisors LP | Hedge Fund | 2026/Q3 | +685,852 | 1.2% |
| FMR | Mutual Fund | 2026/Q3 | +619,055 | 1.5% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +513,034 | 1.5% |
| Capital Research | Mutual Fund | 2026/Q3 | +415,730 | 0.7% |
| Millennium Management LLC | Hedge Fund | 2026/Q3 | +128,841 | 0.2% |
| Boxer Capital Management, LLC | Hedge Fund | 2026/Q3 | +75,000 | 0.1% |
| Trexquant Investment LP | Hedge Fund | 2026/Q3 | +63,792 | 0.1% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 14 Oct 2026 | Christopher Kroeger | Chief Executive Officer | Open Market Disposition | -73,691 | $8.08 | 281,452 |
| 14 Oct 2026 | Christopher Kroeger | Chief Executive Officer | Intent to Sell (Form 144) | -73,691 | $7.81 | – |
| 14 Oct 2026 | Robert Malenka | Co-Founder & Member of Scientific Advisory Board | Intent to Sell (Form 144) | -14,809 | $7.81 | – |
| 14 Oct 2026 | Jonathan Gillis | Chief Admin & Acc Officer, PAO, Interim CFO & PFO | Open Market Disposition | -10,167 | $8.08 | 142,315 |
| 14 Oct 2026 | Jonathan Gillis | Chief Admin & Acc Officer, PAO, Interim CFO & PFO | Intent to Sell (Form 144) | -10,167 | $7.81 | – |
| 14 Oct 2026 | James Lillie | Chief Scientific Officer | Open Market Disposition | -11,513 | $8.08 | 56,624 |
| 14 Oct 2026 | James Lillie | Chief Scientific Officer | Intent to Sell (Form 144) | -11,513 | $7.81 | – |
| 14 Oct 2026 | Kristopher Hanson | General Counsel | Open Market Disposition | -9,020 | $8.08 | 128,024 |
| 14 Oct 2026 | Kristopher Hanson | General Counsel | Intent to Sell (Form 144) | -9,020 | $7.81 | – |
| 14 Oct 2026 | Erin Foff | Chief Medical Officer | Open Market Disposition | -15,355 | $8.08 | 296,906 |
| 14 Oct 2026 | Erin Foff | Chief Medical Officer | Intent to Sell (Form 144) | -15,355 | $7.81 | – |
| 14 Oct 2026 | Anatol Kreitzer | Chief Discovery Officer | Open Market Disposition | -12,248 | $7.84 | 31,295 |
| 14 Oct 2026 | Anatol Kreitzer | Chief Discovery Officer | Intent to Sell (Form 144) | -12,500 | $7.81 | – |
| 15 Sep 2026 | Kristopher Hanson | General Counsel | Automatic Disposition | -16,509 | $11.67 | – |
| 16 Aug 2026 | Christopher Kroeger | Chief Executive Officer | Other Acquisition | +23,145 | – | 1,110,704 |
| 16 Aug 2026 | Christopher Kroeger | Chief Executive Officer | Other Derivative Acquisition | +93,955 | $11.25 | 93,955 |
| 16 Aug 2026 | Jonathan Gillis | Chief Admin & Acc Officer, PAO, Interim CFO & PFO | Other Acquisition | +8,242 | – | 152,482 |
| 16 Aug 2026 | Jonathan Gillis | Chief Admin & Acc Officer, PAO, Interim CFO & PFO | Other Derivative Acquisition | +27,268 | $11.25 | 2,813 |
| 16 Aug 2026 | James Lillie | Chief Scientific Officer | Other Acquisition | +7,730 | – | 165,685 |
| 16 Aug 2026 | James Lillie | Chief Scientific Officer | Other Derivative Acquisition | +31,395 | $11.25 | 31,395 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 3,322,654 | 6.0% | 8.3 |
| 30 Sep 2026 | 3,148,094 | 5.7% | 5.8 |
| 15 Sep 2026 | 3,297,011 | 7.1% | 6.1 |
| 31 Aug 2026 | 3,426,509 | 7.4% | 5.7 |
| 14 Aug 2026 | 3,235,957 | 7.0% | 5.5 |
| 31 Jul 2026 | 3,581,497 | 7.9% | 1.7 |
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