Comparable stake leader
PRIMECAP MANAGEMENT CO/CA/
SEC ownership of Pulmonx Corp
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001127537.
Disclosed value leader
MORGAN STANLEY
Comparable rows
50/50
Latest evidence
05 Jun 2026
- Public ticker
- LUNG on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
PRIMECAP MANAGEMENT CO/CA/
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
PRIMECAP MANAGEMENT CO/CA/
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
05 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001127537
- Issuer location
- Redwood City, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Pulmonx Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
PRIMECAP MANAGEMENT CO/CA/
Disclosed value leader
MORGAN STANLEY
Comparable rows
50/50
Latest evidence
05 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 12%
13D/G row: PRIMECAP MANAGEMENT CO/CA/
Showing 1-8 of 50 holder rows.
Quick read
PRIMECAP MANAGEMENT CO/CA/ leads the comparable SEC ownership view at 12%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens PRIMECAP MANAGEMENT CO/CA/'s linked filing trail.
Comparable ownership
Top 5
PRIMECAP MANAGEMENT CO/CA/
12%
MORGAN STANLEY
8.5%
Soleus Capital Master Fund, L.P.
6.5%
BlackRock, Inc.
1.8%
FMR LLC
0.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PRIMECAP MANAGEMENT CO/CA/ |
13D/G
13F
Company
|
12%
|
$8,029,839
4,956,691 shares
|
-$742,073 | 30 Sep 2025 |
| MORGAN STANLEY |
13D/G
13F
Company
|
8.5%
|
$17,530,110
3,390,737 shares
|
+$2,200,052 | 31 Mar 2025 |
| Soleus Capital Master Fund, L.P. |
13D/G
|
6.5%
|
$4,344,113
2,665,100 shares
|
$0 | 06 Mar 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
1.8%
from 13D/G
|
$3,433,474
2,661,607 shares
|
— | 31 Mar 2026 |
| FMR LLC |
13D/G
13F
Company
|
0.2%
|
$114,736
70,825 shares
|
-$3,416,852 | 31 Oct 2025 |
| Geoffrey Beran Rose |
3/4/5
CHIEF COMMERCIAL OFFICER
|
1.1%
|
$704,874
457,711 shares
|
-$43,807 | 01 Jun 2026 |
| David Aaron Lehman |
3/4/5
GENERAL COUNSEL
|
0.88%
|
$579,287
376,161 shares
|
-$71,741 | 01 Jun 2026 |
| Srikanth Radhakrishnan |
3/4/5
Chief Science &Techn. Officer
|
0.78%
|
$510,108
331,239 shares
|
-$37,316 | 01 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$425,078.
Buys
$0
Insiders: 0
Sells
$425,078
Insiders: 7
Net
-$425,078
Shares: -274,150
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 274,150
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 93,263 | $0 | $144,030 | -$144,030 |
| 3-6 | 0 | 98,265 | $0 | $140,519 | -$140,519 |
| 6-9 | 0 | 48,726 | $0 | $86,295 | -$86,295 |
| 9-12 | 0 | 33,896 | $0 | $54,234 | -$54,234 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-16 of 16 reporting-owner rows connected to Pulmonx Corp. Open a relationship link for the CIK-to-CIK filing trail.
Rows
16
Largest Forms 3/4/5 holder
BOSTON SCIENTIFIC CORP
Net 12M change
-$425,079
Latest report
05 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| BOSTON SCIENTIFIC CORP | 10%+ Owner | $19,538,832 | Mixed | 13 Jul 2021 | ||
| Glendon E. French III | President and CEO, Director | $3,034,189 | -$197,671 | -6.1% | Mixed | 01 Jun 2026 |
| Derrick Sung | COO and CFO | $2,790,816 | Mixed | 01 Dec 2025 | ||
| Geoffrey Beran Rose | Chief Commercial Officer | $704,874 | -$43,807 | -5.9% | Filing P/S | 01 Jun 2026 |
| John McKune | Interim Cfo | $690,463 | Mixed | 01 Mar 2024 | ||
| David Aaron Lehman | General Counsel | $579,287 | -$71,741 | -11% | Filing P/S | 01 Jun 2026 |
| Steven S. Williamson | PRESIDENT AND CEO, Director | $574,347 | -$15,437 | -2.6% | Filing P/S | 02 Sep 2025 |
| Srikanth Radhakrishnan | Chief Science &Techn. Officer | $510,108 | -$37,316 | -6.8% | Filing P/S | 01 Jun 2026 |
| Mehul Joshi | Chief Financial Officer & PAO | $333,582 | -$12,698 | -3.7% | Filing P/S | 02 Sep 2025 |
| Alissa Hsu Lynch | Director | $322,079 | Mixed | 01 Jun 2023 | ||
| Dana G. Mead Jr. | Director | $185,489 | Mixed | 05 Jun 2026 | ||
| Georgia Melenikiotou | Director | $180,231 | Mixed | 05 Jun 2026 | ||
| Daniel P. Florin | Director | $172,743 | -$46,409 | -21% | Mixed | 05 Jun 2026 |
| Richard Ferrari | Director | $163,860 | Mixed | 05 Jun 2026 | ||
| Tiffany Sullivan | Director | $148,606 | Mixed | 05 Jun 2026 | ||
| Thomas W. Burns | Director | $146,284 | Mixed | 05 Jun 2026 |
Recent insider transactions for Pulmonx Corp
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Thomas William Burns | LUNG | Common Stock | Award | 54.5% | 40,000 | 113,399 | 05 Jun 2026 | Direct | ||
| Richard Ferrari | LUNG | Common Stock | Award | 46% | 40,000 | 127,024 | 05 Jun 2026 | Direct | ||
| Daniel P. Florin | LUNG | Common Stock | Award | 42.6% | 40,000 | 133,910 | 05 Jun 2026 | Direct | ||
| Georgia Melenikiotou | LUNG | Common Stock | Award | 40.1% | 40,000 | 139,714 | 05 Jun 2026 | Direct | ||
| Tiffany Sullivan | LUNG | Common Stock | Award | 53.2% | 40,000 | 115,199 | 05 Jun 2026 | Direct | ||
| Dana G. Mead Jr. | LUNG | Common Stock | Award | 40.1% | 40,000 | 139,714 | 05 Jun 2026 | Direct | ||
| Glendon E. French III | LUNG | Common Stock | Sale | -1.13% | $21,212 | $1.57 | -13,511 | 1,178,162 | 02 Jun 2026 | Direct |
| Srikanth Radhakrishnan | LUNG | Common Stock | Sale | -4.19% | $22,325 | $1.54 | -14,497 | 331,239 | 01 Jun 2026 | Direct |
| David Aaron Lehman | LUNG | Common Stock | Sale | -3.73% | $22,475 | $1.54 | -14,594 | 376,161 | 01 Jun 2026 | Direct |
| Geoffrey Beran Rose | LUNG | Common Stock | Sale | -1.72% | $12,355 | $1.54 | -8,023 | 457,711 | 01 Jun 2026 | Direct |
| Glendon E. French III | LUNG | Common Stock | Sale | -3.45% | $65,663 | $1.54 | -42,638 | 1,191,673 | 01 Jun 2026 | Direct |
| Srikanth Radhakrishnan | LUNG | Common Stock | Award | 102.5% | 175,000 | 345,736 | 02 Mar 2026 | Direct | ||
| Srikanth Radhakrishnan | LUNG | Common Stock | Sale | -5.78% | $14,991 | $1.43 | -10,483 | 170,736 | 02 Mar 2026 | Direct |
| Glendon E. French III | LUNG | Common Stock | Sale | -4.59% | $96,973 | $1.43 | -67,813 | 1,409,511 | 02 Mar 2026 | Direct |
| Geoffrey Beran Rose | LUNG | Common Stock | Award | 27.3% | 100,000 | 465,734 | 02 Mar 2026 | Direct | ||
| Geoffrey Beran Rose | LUNG | Common Stock | Sale | -2.07% | $11,057 | $1.43 | -7,732 | 365,734 | 02 Mar 2026 | Direct |
| David Aaron Lehman | LUNG | Common Stock | Award | 62.3% | 150,000 | 390,755 | 02 Mar 2026 | Direct | ||
| David Aaron Lehman | LUNG | Common Stock | Sale | -4.84% | $17,499 | $1.43 | -12,237 | 240,755 | 02 Mar 2026 | Direct |
| Daniel P. Florin | LUNG | Common Stock | Sale | -19.9% | $46,409 | $1.99 | -23,321 | 93,910 | 08 Dec 2025 | Direct |
| Glendon E. French III | LUNG | Common Stock | Award | 432.7% | 1,200,000 | 1,477,324 | 01 Dec 2025 | Direct | ||
| Glendon E. French III | LUNG | Common Stock | Sale | -3.08% | $13,824 | $1.57 | -8,805 | 277,324 | 01 Dec 2025 | Direct |
| Glendon E. French III | LUNG | Performance Stock Units | Award | 800,000 | 800,000 | 01 Dec 2025 | Direct | |||
| Geoffrey Beran Rose | LUNG | Common Stock | Sale | -1.66% | $9,926 | $1.57 | -6,322 | 373,466 | 01 Dec 2025 | Direct |
| Derrick Sung | LUNG | Common Stock | Award | 886.8% | 1,200,000 | 1,335,319 | 01 Dec 2025 | Direct | ||
| Derrick Sung | LUNG | Performance Stock Units | Award | 400,000 | 400,000 | 01 Dec 2025 | Direct | |||
| David Aaron Lehman | LUNG | Common Stock | Sale | -3.9% | $16,136 | $1.57 | -10,278 | 252,992 | 01 Dec 2025 | Direct |
| Steven S. Williamson | LUNG | Common Stock | Sale | -2.62% | $15,437 | $1.60 | -9,648 | 358,967 | 02 Sep 2025 | Direct |
| Mehul Joshi | LUNG | Common Stock | Sale | -3.67% | $12,698 | $1.60 | -7,936 | 208,489 | 02 Sep 2025 | Direct |
| Geoffrey Beran Rose | LUNG | Common Stock | Sale | -1.69% | $10,469 | $1.60 | -6,543 | 379,788 | 02 Sep 2025 | Direct |
| David Aaron Lehman | LUNG | Common Stock | Sale | -3.58% | $15,630 | $1.60 | -9,769 | 263,270 | 02 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.