JASPER THERAPEUTICS INC JSPR
COM NEW · Common Stock · CUSIP 471871202 · ISIN US4718712023
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersRedwood City, CA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $29.19. Options: 5 managers hold calls ($4.3m notional), 5 hold puts ($854.9k).
Trends to Q1 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2023 | 1 |
| Q1 2024 | 62 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2023 | $0 | $0 | — |
| Q3 2023 | $0 | $0 | — |
| Q4 2023 | $0 | $0 | — |
| Q1 2024 | $4.3m | $854.9k | 0.20 |
Biggest buyers
| Velan Capital Investment Management LP | New | +1.5m |
| Soleus Capital Management, L.P. | New | +1.2m |
| Carlyle Group Inc. | New | +1.1m |
| QIMING U.S. VENTURES MANAGEMENT, LLC | New | +929.0k |
| Avidity Partners Management LP | New | +760.0k |
| FRANKLIN RESOURCES INC | New | +722.1k |
| VANGUARD GROUP INC | New | +612.7k |
| MORGAN STANLEY | New | +529.3k |
| SAMSARA BIOCAPITAL, LLC | New | +525.0k |
| SPHERA FUNDS MANAGEMENT LTD. | New | +505.2k |
Biggest sellers
| Fernwood Investment Management, LLC | Reduced | -445.2k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $2.9m100.2k shares |
| LMR Partners LLP | New | $801.5k27.3k shares |
| SIMPLEX TRADING, LLC | New | $440.0k15.0k shares |
| CITADEL ADVISORS LLC | New | $82.2k2.8k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | New | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $408.1k13.9k shares |
| SIMPLEX TRADING, LLC | New | $205.0k7.0k shares |
| CANTOR FITZGERALD, L. P. | New | $130.3k13.6k shares |
| CITADEL ADVISORS LLC | New | $111.6k3.8k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | New | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Velan Capital Investment Management LP 13G · passive investor no change · filed 2026-08-17 | 9.9% |
| T. Rowe Price Investment Management, Inc. 13G · institution new · filed 2025-11-14 | 7.1% |
| BANK OF AMERICA CORP /DE/ 13G · institution new · filed 2026-10-28 | 6.4% |
| ACORN BIOVENTURES, L.P. 13G · passive investor -1.1 pts · filed 2026-01-26 | 5.3% |
Fell to 5% or below in the last year: INTEGRATED CORE STRATEGIES (US) LLC (1.7%, 2026-07-10), MORGAN STANLEY (4.8%, 2026-05-12), GOLDMAN SACHS GROUP INC (0.5%, 2026-05-08), Soleus Capital Master Fund, L.P. (1.0%, 2026-05-08), Carlyle Group Inc. (3.8%, 2026-02-18), Qiming U.S. Healthcare Fund II, L.P. (3.3%, 2025-11-14)
Insider purchases and sales in Q1 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2022 | 0 | — | 1 | $101.4k | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 4 | $51.1k | $14.9k |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 1 | $31.2k | 1 | $6.8k | $6.8k |
| Q1 2024 | 0 | — | 1 | $23.8k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-03-12 | Mahal Jeetinder Singh Chief Operating Officer | Sold | $23.8k900 shares |
| 2024-02-08 | VENKATARAMAN BALAJI +8 10% owner · By Velan Capital Master Fund LP | Bought | $4.5m350.0k shares |
| 2024-02-08 | TC Group, LLC +9 10% owner · See footnotes | Bought | $2.5m190.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2024
| Manager | Shares | Change |
|---|---|---|
| Velan Capital Investment Management LP 22.76% of their portfolio | 1.5m $42.1m | New |
| Soleus Capital Management, L.P. 3.06% of their portfolio | 1.2m $34.9m | New |
| Carlyle Group Inc. 1.97% of their portfolio | 1.1m $31.3m | New |
| QIMING U.S. VENTURES MANAGEMENT, LLC 30.41% of their portfolio | 929.0k $27.3m | New |
| Avidity Partners Management LP 0.79% of their portfolio | 760.0k $22.3m | New |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 722.1k $21.2m | New |
| VANGUARD GROUP INC 0.00% of their portfolio | 612.7k $18.0m | New |
| MORGAN STANLEY 0.00% of their portfolio | 529.3k $15.5m | New |
| SAMSARA BIOCAPITAL, LLC 2.38% of their portfolio | 525.0k $15.4m | New |
| SPHERA FUNDS MANAGEMENT LTD. 2.40% of their portfolio | 505.2k $14.8m | New |
| Octagon Capital Advisors LP 1.79% of their portfolio | 500.8k $14.7m | New |
| KINGDON CAPITAL MANAGEMENT, L.L.C. 1.93% of their portfolio | 497.0k $14.6m | New |
| Opaleye Management Inc. 2.79% of their portfolio | 435.6k $12.8m | New |
| GREAT POINT PARTNERS LLC 1.86% of their portfolio | 407.6k $12.0m | New |
| Rock Springs Capital Management LP 0.30% of their portfolio | 404.3k $11.9m | New |
| Woodline Partners LP 0.10% of their portfolio | 379.2k $11.1m | New |
| Boxer Capital, LLC 0.51% of their portfolio | 350.0k $10.3m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 319.8k $9.4m | New |
| Ally Bridge Group (NY) LLC 4.73% of their portfolio | 289.9k $8.5m | New |
| BlackRock Inc. 0.00% of their portfolio | 193.4k $5.7m | New |
| STEMPOINT CAPITAL LP 1.01% of their portfolio | 129.2k $3.8m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 128.0k $3.8m | New |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 111.4k $3.3m | New |
| SILVERARC CAPITAL MANAGEMENT, LLC 0.90% of their portfolio | 109.9k $3.2m | New |
| Ikarian Capital, LLC 0.84% of their portfolio | 105.2k $3.1m | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 79.8k $2.3m | New |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 69.1k $811.9k | New |
| Mariner, LLC 0.00% of their portfolio | 52.8k $1.6m | New |
| Fernwood Investment Management, LLC 0.42% of their portfolio | 49.5k $1.5m | Reduced -445.2k |
| LMR Partners LLP 0.03% of their portfolio | 43.9k $1.3m | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 41.9k $1.2m | New |
| STATE STREET CORP 0.00% of their portfolio | 40.0k $1.2m | New |
| CANTOR FITZGERALD, L. P. 0.25% of their portfolio | 35.0k $1.1m | New |
| Lion Point Capital, LP 1.80% of their portfolio | 32.0k $939.5k | New |
| BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio | 23.3k $684.8k | New |
| HRT FINANCIAL LP 0.00% of their portfolio | 23.3k $683.0k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 22.7k $666.4k | New |
| Informed Momentum Co LLC 0.10% of their portfolio | 21.5k $632.0k | New |
| Concurrent Investment Advisors, LLC 0.02% of their portfolio | 20.4k $599.2k | New |
| Man Group plc 0.00% of their portfolio | 20.4k $597.7k | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 16.2k $475.9k | New |
| MARSHALL WACE, LLP 0.00% of their portfolio | 13.4k $394.9k | New |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. 0.03% of their portfolio | 11.4k $334.6k | New |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 11.2k $328.0k | New |
| Virtu Financial LLC 0.02% of their portfolio | 10.4k $306.0k | New |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 10.2k $300.9k | New |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 8.4k $247.1k | New |
| Brevan Howard Capital Management LP 0.02% of their portfolio | 8.4k $246.0k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 8.1k $237.3k | New |
| Point72 Asia (Singapore) Pte. Ltd. 0.06% of their portfolio | 8.0k $234.9k | New |
| Leonteq Securities AG 0.03% of their portfolio | 8.0k $234.9k | New |
| Atom Investors LP 0.03% of their portfolio | 7.4k $216.5k | New |
| CITIGROUP INC 0.00% of their portfolio | 7.4k $216.2k | New |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 3.8k $110.0k | New |
| ADAR1 Capital Management, LLC 0.02% of their portfolio | 2.4k $70.6k | New |
| LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio | 744 $21.0k | New |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 697 $20 | New |
| NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio | 100 $2.1k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 92 $2.7k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 10 $0 | New |
| BFSG, LLC 0.00% of their portfolio | 10 $294 | New |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | New |