PULM · Pulmatrix, Inc. · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“However, management believes that without the closing of the Merger, given our current cash position and forecasted negative cash flows from operating activities over the next twelve months, there is substantial doubt about our ability to continue as a going concern after the date that is one year from the date that these financial statements are issued.”View the 10-Q filed Aug 13, 2026
Every disclosed holder of PULM in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns PULM
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 334,531 | 9.16% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 587,607 | 16.09% |
| Remaining | 2,730,147 | 74.75% |
| Registered funds (N-PORT, not summed) | 69,533 | 1.90% |
Shares outstanding: 3,652,285, the issuer's latest cover-page count restated onto today's split basis.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of PULM
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
RCM Eos PIPE HOLDINGS, LLC
13D
CIK 2127194 · Unknown · Apr 16, 2026
|
405,358 | ||
| 2 |
|
182,249 | ||
| 3 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
122,698 | ||
| 4 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
54,899 | ||
| 5 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
33,299 | ||
| 6 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
32,294 | ||
| 7 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
32,294 | ||
| 8 |
SBI Securities Co., Ltd.
13F
CIK 1851815 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
31,285 | ||
| 9 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
23,014 | ||
| 10 |
Shay Capital LLC
13F
CIK 1723643 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
18,857 | ||
| 11 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
14,715 | ||
| 12 |
|
13,945 | ||
| 13 |
XTX Topco Ltd
13F
CIK 1828301 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
11,991 | ||
| 14 |
Fidelity Series Total Market Index Fund
Fund
S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
5,228 | ||
| 15 |
Fidelity Nasdaq Composite Index Fund
Fund
S000055366 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
4,570 | ||
| 16 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
4,427 | ||
| 17 |
|
515 | ||
| 18 |
|
15 | ||
| 19 |
Farther Finance Advisors, LLC
13F
CIK 1992825 · Registered investment adviser · Sep 30, 2026
|
7 | ||
| 20 |
ROYAL BANK OF CANADA
13F
CIK 1000275 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7 | ||
| 21 |
Allworth Financial LP
13F
CIK 1555170 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3 | ||
| 22 |
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO
13F
CIK 1141802 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.