Pulmatrix PULM Institutional Ownership

NASDAQ PULM

$1.48 +0.11 (+8.03%)

At close: Sep 9, 2026 · 4:00 PM EDT

Institutions by Trading Activity

15 Institutions

Increased 5 33.3%

Unchanged 7 46.7%

Reduced 3 20.0%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

9.16%

▲+0.14 pp QoQ

Shares Held by Institutions

334.53K

of 3.65Mn outstanding

▲+6.29% QoQ

Shares Outstanding

3.65Mn

3.32Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

■0 vs prior quarter

Net Shares Added (QoQ)

+19.81K

accumulated since last quarter

Value of Holdings

$465.00K

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Pulmatrix, Inc. (NASDAQ:PULM) appears in 15 institutional 13F filings for the quarter ending June 2026.

Collectively, these holders controlled 9.2% of Pulmatrix's outstanding shares in June 2026, up from 9.0% in March 2026.
They increased total shares held in Pulmatrix by 6.29% from the prior quarter, while the number of investors in PULM increased 15.38% year over year.
During the quarter, 5 of these 15 funds increased positions in PULM, 3 reduced exposure, and 7 held steady.
Institutional investors collectively held 334.53K shares in Pulmatrix as of June 2026, up by 19.81K shares quarter on quarter, and down 228 shares year over year.
As of June 30, 2026, the biggest holder of Pulmatrix is RENAISSANCE TECHNOLOGIES LLC at 122.7K shares, representing 3.36% of shares outstanding.
The biggest buyers of Pulmatrix for the quarter ending June 2026 included Shay Capital LLC (18.86K), RENAISSANCE TECHNOLOGIES LLC (13.55K), SBI Securities Co., Ltd. (1.2K), UBS Group AG (492), Barclays Plc (15).
Leading sellers of Pulmatrix shares for the quarter ending June 2026 were GEODE CAPITAL MANAGEMENT, LLC (11.33K), XTX Topco Ltd (1.68K), VANGUARD CAPITAL MANAGEMENT LLC (1.3K).
According to Business Quant data, leading holders of PULM for June 2026 are RENAISSANCE TECHNOLOGIES LLC (122.7K), BlackRock, Inc. (54.9K), GEODE CAPITAL MANAGEMENT, LLC (33.3K), VANGUARD CAPITAL MANAGEMENT LLC (32.29K), SBI Securities Co., Ltd. (31.28K), Shay Capital LLC (18.86K), VANGUARD FIDUCIARY TRUST CO (14.72K), State Street Corp (13.94K), XTX Topco Ltd (11.99K), UBS Group AG (515).

Form 13F Holdings

15 Institutional Holders

Report period 30 Jun, 2026

Total shares held 334.53K

Of outstanding 9.16%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	RENAISSANCE TECHNOLOGIES LLC	0001037389	122,698	3.36%	▲13,550	+12.41%	$208.59K
2	BlackRock, Inc.	0002012383	54,899	1.50%	0	0.00%	$93.33K
3	GEODE CAPITAL MANAGEMENT, LLC	0001214717	33,299	0.91%	▼11,330	-25.39%	$56.63K
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	32,294	0.88%	▼1,300	-3.87%	$54.90K
5	SBI Securities Co., Ltd.	0001851815	31,285	0.86%	▲1,200	+3.99%	$53.19K
6	Shay Capital LLC	0001723643	18,857	0.52%	▲18,857	0.00%	$32.06K
7	VANGUARD FIDUCIARY TRUST CO	0000933478	14,715	0.40%	0	0.00%	$25.02K
8	State Street Corp	0000093751	13,945	0.38%	0	0.00%	$23.71K
9	XTX Topco Ltd	0001828301	11,991	0.33%	▼1,678	-12.28%	$20.39K
10	UBS Group AG	0001610520	515	0.01%	▲492	+2,139.13%	$875
11	Barclays Plc	0000312069	15	0.00%	▲15	0.00%	$26
12	Royal Bank Of Canada	0001000275	7	0.00%	0	0.00%	$0
12	Farther Finance Advisors, LLC	0001992825	7	0.00%	0	0.00%	$12
13	Allworth Financial LP	0001555170	3	0.00%	0	0.00%	$6
14	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	0001141802	1	0.00%	0	0.00%	$2