PULMONX CORP LUNG
COM · Common Stock · CUSIP 745848101
Company in Redwood City, United States
- SectorHealth care
- IndustrySurgical & Medical Instruments & Apparatus
- HeadquartersRedwood City, CA
- Founded1998
- Websitepulmonx.com
- 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 ($19.0k this quarter). Holder counts are more reliable. Shares outstanding: 42.9m as of 2026-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.30. Options: 3 managers hold calls ($108.4k notional), 6 hold puts ($640.1k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 104 |
| Q4 2022 | 117 |
| Q1 2023 | 103 |
| Q2 2023 | 116 |
| Q3 2023 | 118 |
| Q4 2023 | 124 |
| Q1 2024 | 120 |
| Q2 2024 | 113 |
| Q3 2024 | 114 |
| Q4 2024 | 119 |
| Q1 2025 | 116 |
| Q2 2025 | 115 |
| Q3 2025 | 107 |
| Q4 2025 | 112 |
| Q1 2026 | 114 |
| Q2 2026 | 108 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 60 | 52 |
| Q4 2024 | 56 | 49 |
| Q1 2025 | 56 | 46 |
| Q2 2025 | 56 | 60 |
| Q3 2025 | 55 | 54 |
| Q4 2025 | 51 | 56 |
| Q1 2026 | 56 | 54 |
| Q2 2026 | 56 | 60 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $53.7k | $4.0k | 0.07 |
| Q4 2025 | $263.0k | $297.7k | 1.13 |
| Q1 2026 | $0 | $145.9k | — |
| Q2 2026 | $108.4k | $640.1k | 5.90 |
Biggest buyers
| Almitas Capital LLC | New | +1.1m |
| JANE STREET GROUP, LLC | Added | +625.0k |
| AQR CAPITAL MANAGEMENT LLC | Added | +387.4k |
| MARSHALL WACE, LLP | New | +230.7k |
| MILLENNIUM MANAGEMENT LLC | New | +209.6k |
| HSBC HOLDINGS PLC | Added | +179.8k |
| HRT FINANCIAL LP | New | +108.2k |
| BANK OF MONTREAL /CAN/ | New | +106.0k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +104.8k |
| Squarepoint Ops LLC | Added | +101.1k |
Biggest sellers
| BlackRock, Inc. | Reduced | -1.8m |
| BANK OF AMERICA CORP /DE/ | Sold out | -1.2m |
| MORGAN STANLEY | Reduced | -1.1m |
| DEUTSCHE BANK AG\ | Reduced | -761.4k |
| ExodusPoint Capital Management, LP | Reduced | -720.3k |
| BARCLAYS PLC | Reduced | -649.3k |
| STATE STREET CORP | Reduced | -617.6k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Sold out | -604.5k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -491.8k |
| JPMORGAN CHASE & CO | Reduced | -385.9k |
Biggest calls
| CITADEL ADVISORS LLC | New | $74.9k57.6k shares |
| IMC-Chicago, LLC | New | $31.7k24.4k shares |
| SIMPLEX TRADING, LLC | New | $1.8k1.4k shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $261.4k201.1k shares |
| JANE STREET GROUP, LLC | Added | $160.9k123.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $111.0k85.4k shares |
| IMC-Chicago, LLC | New | $83.6k64.3k shares |
| SIMPLEX TRADING, LLC | Added | $18.3k14.1k shares |
| GROUP ONE TRADING LLC | New | $4.8k3.7k 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 |
|---|---|
| PRIMECAP MANAGEMENT CO/CA/ 13G · institution -1.4 pts · filed 2025-11-13 | 12.2% |
| MORGAN STANLEY 13G · institution -1.6 pts · filed 2026-08-13 | 6.9% |
| Soleus Capital Master Fund, L.P. 13G · passive investor new · filed 2026-03-09 | 6.5% |
Fell to 5% or below in the last year: BlackRock, Inc. (1.8%, 2026-07-29), VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales since 1 Apr 2026
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 |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 3 | $324.1k | $263.0k |
| Q1 2025 | 0 | — | 5 | $1.2m | $816.6k |
| Q2 2025 | 1 | $71.4k | 5 | $136.1k | — |
| Q3 2025 | 0 | — | 4 | $54.2k | — |
| Q4 2025 | 0 | — | 4 | $86.3k | $46.4k |
| Q1 2026 | 0 | — | 4 | $140.5k | — |
| Q2 2026 | 0 | — | 4 | $144.0k | — |
| Q3 2026 | 0 | — | 4 | $177.0k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-01 | French Glendon E. III President and CEO, director | Sold | $94.7k41.9k shares |
| 2026-09-01 | Lehman David Aaron General Counsel | Sold | $32.4k14.3k shares |
| 2026-09-01 | Radhakrishnan Srikanth Chief Science & Techn. Officer | Sold | $32.2k14.2k shares |
| 2026-09-01 | Rose Geoffrey Beran Chief Commercial Officer | Sold | $17.8k7.9k shares |
| 2026-06-02 | French Glendon E. III President and CEO, director | Sold | $21.2k13.5k shares |
| 2026-06-01 | French Glendon E. III President and CEO, director | Sold | $65.7k42.6k shares |
| 2026-06-01 | Lehman David Aaron GENERAL COUNSEL | Sold | $22.5k14.6k shares |
| 2026-06-01 | Radhakrishnan Srikanth Chief Science &Techn. Officer | Sold | $22.3k14.5k shares |
| 2026-06-01 | Rose Geoffrey Beran CHIEF COMMERCIAL OFFICER | Sold | $12.4k8.0k 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, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| PRIMECAP MANAGEMENT CO/CA/ 0.00% of their portfolio | 4.6m $6.0m | Reduced -112.7k |
| MORGAN STANLEY 0.00% of their portfolio | 2.9m $3.8m | Reduced -1.1m |
| Soleus Capital Management, L.P. 0.12% of their portfolio | 2.8m $3.6m | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.6m $2.1m | Reduced -4.0k |
| ExodusPoint Capital Management, LP 0.01% of their portfolio | 1.2m $1.6m | Reduced -720.3k |
| Almitas Capital LLC 0.33% of their portfolio | 1.1m $1.4m | New |
| BlackRock, Inc. 0.00% of their portfolio | 882.5k $1.1m | Reduced -1.8m |
| Stonepine Capital Management, LLC 0.81% of their portfolio | 815.4k $1.1m | Added +47.1k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 758.2k $985.7k | Added +625.0k |
| BRAIDWELL LP 0.04% of their portfolio | 752.5k $978.3k | Unchanged |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 745.0k $968.5k | Added +387.4k |
| Parkman Healthcare Partners LLC 0.09% of their portfolio | 646.6k $840.5k | Reduced -109.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 452.7k $588.7k | Reduced -491.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 425.1k $552.6k | Added +104.8k |
| ADAR1 Capital Management, LLC 0.02% of their portfolio | 404.5k $525.8k | Added +30.0k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 402.3k $523.0k | Reduced -761.4k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 327.5k $425.8k | Reduced -7.5k |
| Jefferies Financial Group Inc. 0.00% of their portfolio | 285.1k $370.6k | Unchanged |
| CFM WEALTH PARTNERS LLC 0.04% of their portfolio | 264.0k $343.3k | Unchanged |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 250.5k $325.7k | Reduced -30.7k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 230.7k $300.0k | New |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 223.1k $287.0k | Added +56.8k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 209.6k $272.4k | New |
| UBS Group AG 0.00% of their portfolio | 204.1k $265.3k | Reduced -5.6k |
| Birchview Capital, LP 0.12% of their portfolio | 200.5k $260.7k | Reduced -49.7k |
| Centiva Capital, LP 0.01% of their portfolio | 200.1k $260.1k | Added +46.2k |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P 0.20% of their portfolio | 200.0k $260.0k | Added +42.5k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 193.8k $249.1k | Added +179.8k |
| STATE STREET CORP 0.00% of their portfolio | 191.5k $249.0k | Reduced -617.6k |
| Squarepoint Ops LLC 0.00% of their portfolio | 183.6k $238.6k | Added +101.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 143.4k $186.4k | Added +86.4k |
| GSA CAPITAL PARTNERS LLP 0.01% of their portfolio | 136.2k $177.0k | Reduced -1.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 135.3k $175.9k | Reduced -88.1k |
| XTX Topco Ltd 0.00% of their portfolio | 118.0k $153.4k | Added +38.0k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.00% of their portfolio | 110.0k $143.0k | Unchanged |
| HRT FINANCIAL LP 0.00% of their portfolio | 108.2k $140.0k | New |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 106.0k $137.7k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 104.1k $135.4k | Reduced -250.6k |
| Redhawk Wealth Advisors, Inc. 0.01% of their portfolio | 99.6k $129.5k | Added +64.9k |
| ALGERT GLOBAL LLC 0.00% of their portfolio | 98.3k $127.8k | Added +13.0k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 97.8k $127.2k | Reduced -44.1k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 86.6k $112.5k | Added +18.0k |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 69.2k $89.9k | Added +47.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 64.4k $83.7k | Reduced -24.7k |
| Quadrature Capital Ltd 0.00% of their portfolio | 63.9k $83.1k | New |
| Engineers Gate Manager LP 0.00% of their portfolio | 62.6k $81.4k | Added +6.4k |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 61.3k $79.7k | Added +12.6k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 61.0k $79.3k | Unchanged |
| Berger Financial Group, Inc 0.00% of their portfolio | 54.0k $70.2k | Unchanged |
| BRIGHTON JONES LLC 0.00% of their portfolio | 53.2k $69.2k | Added +8.5k |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 50.8k $66.1k | Added +1.1k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 49.9k $64.8k | New |
| FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND 0.00% of their portfolio | 40.0k $52.0k | Unchanged |
| PERKINS CAPITAL MANAGEMENT INC 0.04% of their portfolio | 39.5k $51.4k | Reduced -1.5k |
| Mariner, LLC 0.00% of their portfolio | 38.5k $50.1k | Added +27.5k |
| Cerity Partners LLC 0.00% of their portfolio | 38.1k $49.6k | Added +9.3k |
| FMR LLC 0.00% of their portfolio | 35.7k $46.4k | Reduced -12.5k |
| Jain Global LLC 0.00% of their portfolio | 35.0k $45.5k | New |
| BARCLAYS PLC 0.00% of their portfolio | 34.1k $44.4k | Reduced -649.3k |
| Creative Planning 0.00% of their portfolio | 33.5k $43.6k | Added +10.8k |
| Virtu Financial LLC 0.00% of their portfolio | 29.5k $38.0k | New |
| R Squared Ltd 0.02% of their portfolio | 27.4k $35.7k | Added +7.6k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 23.7k $30.8k | Reduced -626 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 23.2k $35.8k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 19.4k $25.2k | Reduced -27.0k |
| Arax Advisory Partners 0.00% of their portfolio | 14.9k $19.3k | Added +14.9k |
| LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio | 14.2k $18.4k | Unchanged |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 13.6k $17.6k | Unchanged |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio | 13.5k $17.6k | Reduced -23.6k |
| Ground Swell Capital, LLC 0.02% of their portfolio | 12.4k $16.1k | New |
| TWO SIGMA SECURITIES, LLC 0.00% of their portfolio | 12.0k $15.6k | New |
| Merit Financial Group, LLC 0.00% of their portfolio | 12.0k $15.6k | New |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 11.5k $15.0k | New |
| TUDOR INVESTMENT CORP ET AL 0.00% of their portfolio | 11.0k $14.3k | Unchanged |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.00% of their portfolio | 10.0k $13.0k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 6.5k $8.0k | Added +2.5k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 5.3k $6.9k | Reduced -13.5k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 4.8k $6.2k | Added +881 |
| Integrated Wealth Concepts LLC 0.00% of their portfolio | 3.8k $4.9k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 2.4k $3.1k | Reduced -9.1k |
| Optiver Holding B.V. 0.00% of their portfolio | 2.3k $3.0k | Reduced -1.1k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 2.2k $3.0k | Reduced -385.9k |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 2.1k $2.7k | Added +468 |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 2.1k $2.7k | Reduced -913 |
| GAMMA Investing LLC 0.00% of their portfolio | 2.1k $2.7k | Reduced -740 |
| Allworth Financial LP 0.00% of their portfolio | 1.6k $2.1k | Added +1.1k |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 1.5k $1.9k | Reduced -3.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 1.2k $1.5k | Reduced -6.9k |
| AdvisorNet Financial, Inc 0.00% of their portfolio | 1.0k $1.3k | Unchanged |
| Essential Partners LLC 0.00% of their portfolio | 937 $1.2k | Added +679 |
| Physician Wealth Advisors, Inc. 0.00% of their portfolio | 855 $1.1k | Unchanged |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 606 $792 | Added +297 |
| True Wealth Design, LLC 0.00% of their portfolio | 441 $574 | Added +276 |
| ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio | 341 $443 | Added +198 |
| Parallel Advisors, LLC 0.00% of their portfolio | 336 $437 | Unchanged |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 145 $187 | Reduced -1.3k |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 102 $133 | Added +1 |
| Fortitude Family Office, LLC 0.00% of their portfolio | 90 $117 | New |
| SJS Investment Consulting Inc. 0.00% of their portfolio | 83 $108 | Added +74 |
| IFP Advisors, Inc 0.00% of their portfolio | 76 $99 | Reduced -82 |