Qiming U.S. Ventures Management, LLC — 13F Holdings & Portfolio
CIK 1909617 · latest 13F-HR filed 2025-11-10
Qiming U.S. Ventures Management, LLC manages $55.6M in 13F-reported U.S. long-equity assets across 4 reported positions as of its 2025-09-30 13F-HR filing. Its largest disclosed positions are TOURMALINE BIO INC (63.76%), KRRO (31.68%), JSPR (3.97%). Quarter over quarter (versus its 2025-06-30 filing) the fund opened 0 new positions and exited 2; 2 existing positions rose in reported value and 2 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2025-11-10
vs 2025-06-30
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q3 25Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q2 25 → Q3 25Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
2 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 100%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Mar 30, 2026.
CAMBRIDGE, MA 02142
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| RIESCHEL, GARY, EDWARD Control | MEMBER/MANAGER OF QIMING U.S. VENTURES MANAGEMENT, LLC since Apr 2017 | 75% or more | Individual |
| Baker, Ryan, Kendall | QIMING US CFO since Jun 2020 | Less than 5% | Individual |
| HEADLEY, ROBERT | PARTNER since Jun 2019 | Less than 5% | Individual |
| LEE, GRACE | PARTNER & GROUP COO since Jan 2017 | Less than 5% | Individual |
Ownership & leadership changes · 5 filings with changes since Mar 13, 2017
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- ChangedLEE, GRACE · no longer a control person
- ChangedRIESCHEL, GARY, EDWARD · title MEMBER/MANAGER OF QIMING U.S. HEALTHCARE GP, LLC / MEMBER/MANAGER OF QIMING U.S. VENTURES MANAGEMENT, LLC → MEMBER/MANAGER OF QIMING U.S. VENTURES MANAGEMENT, LLC
- ChangedLEE, GRACE · title PARTNER, GROUP COO & CFO → PARTNER & GROUP COO
- AddedBaker, Ryan, Kendall · QIMING US CFO · Less than 5%
- AddedHEADLEY, ROBERT · PARTNER · Less than 5%
- ChangedLEE, GRACE · title CHIEF FINANCIAL OFFICER → PARTNER, GROUP COO & CFO
- ChangedRIESCHEL, GARY, EDWARD · title MEMBER/MANAGER → MEMBER/MANAGER OF QIMING U.S. HEALTHCARE GP, LLC / MEMBER/MANAGER OF QIMING U.S. VENTURES MANAGEMENT, LLC
- ListedLEE, GRACE · CHIEF FINANCIAL OFFICER · Less than 5% · control person
- ListedRIESCHEL, GARY, EDWARD · MEMBER/MANAGER · 75% or more · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- TOURMALINE BIO INC$23.6M +199.1%
- KORRO BIO INC$13.0M +283.4%
Qiming U.S. Ventures Management, LLC Holdings (2025-09-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2025-09-30 | 2025-11-10 | $55.6M | 4 | 0001909617-25-000004 |
| 2025-06-30 | 2025-08-14 | $23.6M | 6 | 0001415889-25-021900 |