PULM
Pulmatrix, Inc.
$1.73
+0.01 (+0.58%)
At close · Jul 6
Going-concern doubt
— flagged May 15, 2026
Substantial doubt about the company's ability to continue as a going concern.
“Management believes that, given the Company’s current cash position and forecasted negative cash flows from operating activities over the next twelve months, there is substantial doubt about its ability to continue as a going concern after the date that is one year from the date that these financial statements are issued without the closing of the Merger.”View the 10-Q filed May 15, 2026
Market Cap
$6.35M
Shares
3,652,285
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 15
Total Value: $425,069
Total Shares: 329,516
Institutional Ownership Trend
17 quarters
Holder Concentration
Across 15 13F filers · Δ vs Dec 31, 2025Top Holder
33.1%
+2.0 pts
Top 5
82.7%
−4.1 pts
Top 10
100.0%
+0.0 pts
HHI
1,820
Moderately concentrated+9
Quarterly Activity
vs Dec 31, 2025
New
5
Increased
2
Decreased
4
Sold Out
5
Unchanged
4
Holder count:
0
Institutional value:
-46.6%
Shares held:
-7.6%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega GEODE CAPITAL MANAGEMENT, LLC | +3,685 | 44,629 | |
| Mega ROYAL BANK OF CANADA | +1 | 7 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid SBI Securities Co., Ltd. | −25,157 | 30,085 | |
| Large RENAISSANCE TECHNOLOGIES LLC | −1,772 | 109,148 | |
| Mid Tower Research Capital LLC (TRC) | −706 | 207 | |
| Mega BlackRock, Inc. | −436 | 54,899 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 33,594 | $43,336 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 14,715 | $18,982 | |
| Mega JANE STREET GROUP, LLC | 14,584 | $18,812 | |
| Mid XTX Topco Ltd | 13,669 | $17,633 | |
| Mega UBS Group AG | 23 | $29 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 47,082 | $104,992 | |
| Mid DRW Securities, LLC | 20,505 | $45,726 | |
| Mega DIMENSIONAL FUND ADVISORS LP | 10,326 | $23,026 | |
| Mega BANK OF AMERICA CORP /DE/ | 1,365 | $3,042 | |
| Small FLAGSHIP HARBOR ADVISORS, LLC | 80 | $178 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Large RENAISSANCE TECHNOLOGIES LLC | $140,800 | 33.12% | 109,148 | Shares | Sole | 2026-05-14 | ||||
| Mega BlackRock, Inc. | $70,819 | 16.66% | 54,899 | Shares | Sole | 2026-05-13 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $57,571 | 13.54% | 44,629 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $43,336 | 10.20% | 33,594 | Shares | Defined | 2026-05-15 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $38,809 | 9.13% | 30,085 | Shares | Defined | 2026-04-28 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $18,982 | 4.47% | 14,715 | Shares | Defined | 2026-05-08 | ||||
| Mega JANE STREET GROUP, LLC | $18,812 | 4.43% | 14,584 | Shares | Defined | 2026-05-12 | ||||
| Mega STATE STREET CORP | $17,989 | 4.23% | 13,945 | Shares | Defined | 2026-05-15 | ||||
| Mid XTX Topco Ltd | $17,633 | 4.15% | 13,669 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $267 | 0.06% | 207 | Shares | Defined | 2026-05-15 | ||||
| Mega UBS Group AG | $29 | 0.01% | 23 | Shares | Defined | 2026-05-05 | ||||
| Mid Farther Finance Advisors, LLC | $9 | 0.00% | 7 | Shares | Sole | 2026-04-07 | ||||
| Mega ROYAL BANK OF CANADA Bank | $9 | 0.00% | 7 | Shares | Defined | 2026-05-15 | ||||
| Mid Allworth Financial LP | $3 | 0.00% | 3 | Shares | Sole | 2026-05-15 | ||||
| Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $1 | 0.00% | 1 | Shares | Defined | 2026-05-07 | ||||
| No holders match your search. | ||||||||||