13D/G large-stake feed

Latest 13D/G Reports

Since 07 May 2026. Review filer CIK, subject security, ownership %, and SEC evidence first.

Recent 13D/G signals

Large-stake disclosures to inspect

Start with holder, issuer/security, stake size, and SEC evidence.

13G/A

Nantahala Capital Partners Limited Partnership stake in KIORA PHARMACEUTICALS, INC.

Holder CIK 0001502725

13G/A KPRX
CIK
0001502725
Issuer
KIORA PHARMACEUTICALS INC
Security
KPRX
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
3.4% / 148,736 shares
Filed
15 May 2026, 16:30:09 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G/A

RA CAPITAL MANAGEMENT, L.P. stake in 4D MOLECULAR THERAPEUTICS, INC.

Holder CIK 0001346824

13G/A FDMT
CIK
0001346824
Issuer
4D Molecular Therapeutics, Inc.
Security
FDMT
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
9.9% / 5,105,622 shares
Filed
15 May 2026, 16:30:05 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G/A

BCLS Fund III Investments, LP stake in Heartflow, Inc.

Holder CIK 0001952107

13G/A HTFL
CIK
0001952107
Issuer
Heartflow, Inc.
Security
HTFL
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
12% / 10,448,158 shares
Filed
15 May 2026, 16:30:03 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13D/A

M33 Growth I L.P. stake in Oncology Institute, Inc.

Holder CIK 0001718621

13D/A TOI
CIK
0001718621
Issuer
Oncology Institute, Inc.
Security
TOI
Source
SEC 13D/A
Action
Beneficial ownership disclosure
Magnitude
4.9% / 5,002,656 shares
Filed
15 May 2026, 16:30:03 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G

SC US (TTGP), LTD. stake in Ethos Technologies Inc.

Holder CIK 0001607841

13G LIFE
CIK
0001607841
Issuer
Ethos Technologies Inc.
Security
LIFE
Source
SEC 13G
Action
Beneficial ownership disclosure
Magnitude
28% / 11,857,508 shares
Filed
15 May 2026, 16:30:03 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

13G/A

Cross Ocean Partners Management LP stake in KLX Energy Services Holdings, Inc.

Holder CIK 0001752226

13G/A KLXE
CIK
0001752226
Issuer
KLX Energy Services Holdings, Inc.
Security
KLXE
Source
SEC 13G/A
Action
Beneficial ownership disclosure
Magnitude
3.7% / 745,122 shares
Filed
15 May 2026, 16:30:03 UTC

Check whether this is a new stake, an amended position, or a material ownership change before moving to the issuer page.

Rows shown
1,101-1,150 of 3,765
Per page
50
Current page
23

Schedule 13D/G ownership events

Activist and large-stake radar

Stake size, change direction, reporting filer, issuer, active/passive form type, and SEC evidence.

Visible reports

6

Fresh large-stake filings promoted above the legacy table.

13D/13G mix

1/5

Active-intent candidates versus passive large-stake disclosures.

Largest visible stake

28%

Highest class ownership surfaced in the preview cards.

Newest evidence

15 May 2026

Use recency before treating an old large-stake story as fresh.

Signal checks

13D active-intent check

active/control intent, item text, amendments

13G passive stake check

large passive holder disclosure

Stake change direction

ownership percent and share change

Issuer and owner follow-up

issuer, filer history, insider activity, 13F context

SEC-verifiable Schedule 13D/G path

Open the Schedule 13D/G filing, then cross-check insider and Form 13F evidence.

Large-stake signal

Nantahala Capital Partners Limited Partnership

KIORA PHARMACEUTICALS, INC. (KPRX)

Schedule 13G/A Ownership 3.4% Filing-backed
CIK
000110465926062628
Source
SEC Schedule 13G/A
Action
Large stake reduction disclosed
Magnitude
3.4%
Filed
15 May 2026, 16:30:09 UTC
Period
31 Mar 2026

Nantahala Capital Partners Limited Partnership filed Schedule 13G/A for KIORA PHARMACEUTICALS, INC. (KPRX). Reported class ownership: 3.4%. Ownership change: -1.9%. Share change: -22%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

RA CAPITAL MANAGEMENT, L.P.

4D MOLECULAR THERAPEUTICS, INC. (FDMT)

Schedule 13G/A Ownership 9.9% Filing-backed
CIK
000134682426000143
Source
SEC Schedule 13G/A
Action
Large beneficial ownership stake disclosed
Magnitude
9.9%
Filed
15 May 2026, 16:30:05 UTC
Period
31 Mar 2026

RA CAPITAL MANAGEMENT, L.P. filed Schedule 13G/A for 4D MOLECULAR THERAPEUTICS, INC. (FDMT). Reported class ownership: 9.9%. Ownership change: 0%. Share change: -11%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

BCLS Fund III Investments, LP

Heartflow, Inc. (HTFL)

Schedule 13G/A Ownership 12% Filing-backed
CIK
000119312526226935
Source
SEC Schedule 13G/A
Action
Large stake reduction disclosed
Magnitude
12%
Filed
15 May 2026, 16:30:03 UTC
Period
31 Mar 2026

BCLS Fund III Investments, LP filed Schedule 13G/A for Heartflow, Inc. (HTFL). Reported class ownership: 12%. Ownership change: -2.7%. Share change: -16%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

M33 Growth I L.P.

Oncology Institute, Inc. (TOI)

Schedule 13D/A Ownership 4.9% Filing-backed
CIK
000121390026057832
Source
SEC Schedule 13D/A
Action
Potential activist/control stake disclosed
Magnitude
4.9%
Filed
15 May 2026, 16:30:03 UTC
Period
14 May 2026

M33 Growth I L.P. filed Schedule 13D/A for Oncology Institute, Inc. (TOI). Reported class ownership: 4.9%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

SC US (TTGP), LTD.

Ethos Technologies Inc. (LIFE)

Schedule 13G Ownership 28% Filing-backed
CIK
000119312526226929
Source
SEC Schedule 13G
Action
Large beneficial ownership stake disclosed
Magnitude
28%
Filed
15 May 2026, 16:30:03 UTC
Period
31 Mar 2026

SC US (TTGP), LTD. filed Schedule 13G for Ethos Technologies Inc. (LIFE). Reported class ownership: 28%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Large-stake signal

Cross Ocean Partners Management LP

KLX Energy Services Holdings, Inc. (KLXE)

Schedule 13G/A Ownership 3.7% Filing-backed
CIK
000121390026057831
Source
SEC Schedule 13G/A
Action
Large beneficial ownership stake disclosed
Magnitude
3.7%
Filed
15 May 2026, 16:30:03 UTC
Period
31 Mar 2026

Cross Ocean Partners Management LP filed Schedule 13G/A for KLX Energy Services Holdings, Inc. (KLXE). Reported class ownership: 3.7%. Open the SEC evidence before treating this as an activist or passive large-stake signal.

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Filed by Symbol Subject Shares owned Ownership % Source
Nantahala Capital Partners Limited Partnership CIK 0001502725 KPRX KIORA PHARMACEUTICALS, INC. 148,736 3.4% SEC filing
RA CAPITAL MANAGEMENT, L.P. CIK 0001346824 FDMT 4D MOLECULAR THERAPEUTICS, INC. 5,105,622 9.9% SEC filing
BCLS Fund III Investments, LP CIK 0001952107 HTFL Heartflow, Inc. 10,448,158 12% SEC filing
M33 Growth I L.P. CIK 0001718621 TOI Oncology Institute, Inc. 5,002,656 4.9% SEC filing
SC US (TTGP), LTD. CIK 0001607841 LIFE Ethos Technologies Inc. 11,857,508 28% SEC filing
Cross Ocean Partners Management LP CIK 0001752226 KLXE KLX Energy Services Holdings, Inc. 745,122 3.7% SEC filing
BLATT LAWRENCE CIK 0001242110 ALGS Aligos Therapeutics, Inc. 286,213 5.1% SEC filing
BCPE BDF Investor, LP CIK 0002085166 BOBS Bob's Discount Furniture, Inc. 95,370,751 73% SEC filing
Bain Capital Life Sciences Opportunities IV, L.P. CIK 0002015553 OLMA OLEMA PHARMACEUTICALS, INC. 7,473,238 8.2% SEC filing
Bain Capital Life Sciences Fund II, L.P. CIK 0001773187 XLO Xilio Therapeutics, Inc. 664,021 10% SEC filing
Point72 Asset Management, L.P. CIK 0001603466 TENX TENAX THERAPEUTICS, INC. 533,965 3.1% SEC filing
PACIFIC INVESTMENT MANAGEMENT CO LLC CIK 0001163368 VG Venture Global, Inc. 251,315,622 49% SEC filing
MMCAP International Inc. SPC CIK 0001304857 ARIS Aris Mining Corporation 7,815,142 3.8% SEC filing
Alyeska Investment Group, L.P. CIK 0001453072 DFLI Dragonfly Energy Holdings Corp. 750,270 6.2% SEC filing
Stoney Lonesome HF LP CIK 0002014854 HCAT Health Catalyst, Inc. 6,308,345 8.6% SEC filing
MMCAP International Inc. SPC CIK 0001304857 ASTL Algoma Steel Group Inc. 12,845,622 12% SEC filing
Coliseum Capital Management, LLC CIK 0001409751 MBC MasterBrand, Inc. 12,694,710 9.9% SEC filing
Point72 Asset Management, L.P. CIK 0001603466 FBRX Forte Biosciences, Inc. 0 0% SEC filing
MMCAP International Inc. SPC CIK 0001304857 CRDL Cardiol Therapeutics Inc. 21,063,856 18% SEC filing
Luxor Capital Group, LP CIK 0001316580 AZ A2Z CUST2MATE SOLUTIONS CORP. 2,880,400 6.5% SEC filing
Venrock Healthcare Capital Partners III, L.P. CIK 0001738048 ZURA ZURA BIO LIMITED 9,816,384 9.9% SEC filing
MMCAP International Inc. SPC CIK 0001304857 POET POET Technologies Inc. 14,516,820 10% SEC filing
Point72 Asset Management, L.P. CIK 0001603466 PALI PALISADE BIO, INC. 411,772 0.2% SEC filing
Novo Holdings A/S CIK 0001388325 LNZA LanzaTech Global, Inc. 158,148 1.6% SEC filing
Point72 Asset Management, L.P. CIK 0001603466 DNTH Dianthus Therapeutics, Inc. /DE/ 643,599 1.2% SEC filing
Alyeska Investment Group, L.P. CIK 0001453072 CRML Critical Metals Corp. 10,185,416 8.1% SEC filing
Verve Capital Ltd CIK 0002088344 VOR VOR BIOPHARMA INC. 4,999,272 9.3% SEC filing
GENDELL JEFFREY L CIK 0001056581 SND Smart Sand, Inc. 3,126,915 7.3% SEC filing
Stoney Lonesome HF LP CIK 0002014854 AFCG Advanced Flower Capital Inc. 1,673,092 7.1% SEC filing
DARLINGTON PARTNERS CAPITAL MANAGEMENT, LP CIK 0001854440 FOUR Shift4 Payments, Inc. 6,576,509 8.3% SEC filing
Point72 Asset Management, L.P. CIK 0001603466 EDSA Edesa Biotech, Inc. 2 0% SEC filing
TCG Crossover GP II, LLC CIK 0001969280 LBRX LB Pharmaceuticals Inc. 1,839,489 6.4% SEC filing
TCG Crossover GP II, LLC CIK 0001969280 FULC Fulcrum Therapeutics, Inc. 5,250,000 7.9% SEC filing
Point72 Asset Management, L.P. CIK 0001603466 DSGN Design Therapeutics, Inc. 2,722,754 4.4% SEC filing
Garner Jennifer Anne CIK 0002083657 OFRM Once Upon a Farm, PBC 3,057,280 7.1% SEC filing
Magnetar Financial LLC CIK 0001352851 WHLR Wheeler Real Estate Investment Trust, Inc. 1,195,354 45% SEC filing
Fairbanks Jonathan B. CIK 0002048763 FLOC Flowco Holdings Inc. 29,003,413 41% SEC filing
NOMURA HOLDINGS INC CIK 0001163653 NNBR NN INC 1,944,832 3.7% SEC filing
WHITEBOX ADVISORS LLC CIK 0001257391 ELBM Electra Battery Materials Corp 10,497,541 9.9% SEC filing
Turtle Creek Asset Management Inc. CIK 0001484148 ATS ATS Corp /ATS 4,896,669 5% SEC filing
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 0000921739 KALU KAISER ALUMINUM CORP 714,176 4.4% SEC filing
NOMURA HOLDINGS INC CIK 0001163653 TOON Kartoon Studios, Inc. 3,286,664 5.8% SEC filing
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 0000921739 CUSIP 04524E109 IMAX CORP 3,704,207 6.8% SEC filing
TCG Crossover GP II, LLC CIK 0001969280 VTGN Vistagen Therapeutics, Inc. 4,100,029 10% SEC filing
Alyeska Investment Group, L.P. CIK 0001453072 BKKT Bakkt, Inc. 3,053,153 10% SEC filing
DISCIPLINED GROWTH INVESTORS INC /MN CIK 0001050442 PRLB Proto Labs Inc 2,497,355 10% SEC filing
Paradigm Biocapital Advisors LP CIK 0001855655 EYPT EyePoint, Inc. 3,142,437 3.8% SEC filing
Point72 Asset Management, L.P. CIK 0001603466 CYBN CYBIN INC. 686,669 1.4% SEC filing
Paradigm Biocapital Advisors LP CIK 0001855655 URGN UroGen Pharma Ltd. 1,703,949 3.5% SEC filing
STEADFAST CAPITAL MANAGEMENT LP CIK 0001214822 PLNT Planet Fitness, Inc. 2,212,592 2.8% SEC filing
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