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PULM · NASDAQ · Biotechnology

Pulmatrix (PULM)

Dry-powder inhalation technology and clinical assets awaiting licensing or monetization.

$1.57
Pre-market+0.10 (+7.11%)
At close$1.47(−3.61%)
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Breakdown13F · 13D/G · Form 4

Institutions14 holders · as of Mar 31, 20269.02%329.5K shares
Otherremainder90.98%3.32M shares

3.65M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
Renaissance Technologies LLCInstitution
2.99%109,14813Fas of Mar 31, 2026
BlackRock, Inc.Institution
1.50%54,89913Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution
1.22%44,62913Fas of Mar 31, 2026
Vanguard Capital Management LLCInstitution
0.92%33,59413Fas of Mar 31, 2026
Sbi Securities Co., Ltd.Institution
0.82%30,08513Fas of Mar 31, 2026
Vanguard Fiduciary Trust CoInstitution
0.40%14,71513Fas of Mar 31, 2026
Jane Street Group, LLCInstitution
0.40%14,58413Fas of Mar 31, 2026
State Street CorpInstitution
0.38%13,94513Fas of Mar 31, 2026
XTX Topco LtdInstitution
0.37%13,66913Fas of Mar 31, 2026
Tower Research Capital LLC (TRC)Institution
0.01%20713Fas of Mar 31, 2026
UBS Group AGInstitution
0.00%2313Fas of Mar 31, 2026
Farther Finance Advisors, LLCInstitution
0.00%713Fas of Mar 31, 2026
Allworth Financial LPInstitution
0.00%313Fas of Mar 31, 2026
Northwestern Mutual Wealth Management CoInstitution
0.00%113Fas of Mar 31, 2026
CVI Investments, Inc.Strategic
—6.20% of class, as filed—13Gfiled Feb 24, 2021 ↗
Daniel B. AsherInsider
—5.60% of class, as filed—13G/Afiled Feb 11, 2022 ↗
Empery Asset Management, LPInstitution
—4.99% of class, as filed—13G/Afiled Jan 15, 2020 ↗
HonigInsider
—1.92% of class, as filed—13G/Afiled Feb 9, 2017 ↗
Michael BiggerInsider
—3.10% of class, as filed—13Gfiled Feb 11, 2020 ↗
RCM Eos PIPE HOLDINGS, LLCStrategic
—9.99% of class, as filed—13Dfiled Apr 22, 2026 ↗
Sabby Volatility Warrant Master Fund, Ltd.Strategic
—5.30% of class, as filed—13D/Gfiled Jul 24, 2020 ↗
Steven BoydInsider
—4.99% of class, as filed—13Gfiled Apr 24, 2020 ↗
Steven Gillis1Insiderdirector
0.47%17,182Form 4filed Apr 5, 2018 ↗
Mark T. Iwicki1Insiderdirector
0.04%1,535Form 4filed Apr 5, 2018 ↗
Terrance Mcguire1Insiderdirector, 10 percent owner
0.00%119Form 4filed Apr 5, 2018 ↗
  1. Last filed Apr 5, 2018; leaving the company requires no filing. Not in the bar.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

14 holders · 329.5K shares · 5 new positions · 6 increased · 4 reduced · 5 closed

HolderShares% outstandingChg q/qFiled
Renaissance Technologies LLC109.1K2.99%−1.8KMay 14, 2026
BlackRock, Inc.54.9K1.50%−436May 13, 2026
Geode Capital Management, LLC44.6K1.22%+3.7KMay 15, 2026
Vanguard Capital Management LLC33.6K0.92%+33.6KnewMay 15, 2026
Sbi Securities Co., Ltd.30.1K0.82%−25.2KApr 28, 2026
Vanguard Fiduciary Trust Co14.7K0.40%+14.7KnewMay 8, 2026
Jane Street Group, LLC14.6K0.40%+14.6KnewMay 12, 2026
State Street Corp13.9K0.38%0May 15, 2026

Ownership statements13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
RCM Eos PIPE HOLDINGS, LLCincl. Slawin Kevin M., Rapha Capital Management, LLC9.99%405.4K13DApr 22, 2026 ↗

Insider tradesForm 4

Latest trades

Nothing filed in the last 12 months.

CongressHouse and Senate disclosures

Not reported.