Filer Snapshot

Fairmount Funds Management LLC

CIK 0001802528. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Company

Total filings

64

Latest filing

14 Aug 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13F-HR for Q2 2026. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Largest parsed holding

ORKA

$352.63M reported value

Open holding

13D/G large stake

CBIO

16 Jul 2026 · 17% ownership

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Source: SEC Form 13F

13F-HR filed on 14 Aug 2026 for CIK 0001802528.

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Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

13F portfolio$1.51B

Quarterly institutional holdings reported on Form 13F; not total AUM.

Forms 3/4/5 positions$1.7B

Reporting-owner positions with enough filing detail to estimate value.

Latest reported 13F value

13F
$1.51B

Reported market value from the latest parsed Form 13F information table; this is not total assets under management.

Source: SEC Form 13FScope: U.S.-listed equity holdings

Forms 3/4/5 position value

3/4/5
$1.7B

Estimated from parsed Forms 3/4/5 when filings include enough share and price data.

Source: Forms 3/4/5Confidence: Estimated when price data is available

Largest 13F holdings

13F
ORKA DNTH DMRA COGT JBIO
+7 moreELVN VRDN ZBIO CBIO APGE FTH IKT

Largest symbols in the latest parsed Form 13F information table.

Freshness: Latest parsed 13F period

Largest linked holdings

Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.

COGT ORKA DMRA VRDN CBIO APGE JBIO ZBIO
+2 moreDNTH SYRE

Largest 13F holdings

Largest symbols in the latest parsed Form 13F information table.

ORKA DNTH DMRA COGT JBIO ELVN VRDN ZBIO
+4 moreCBIO APGE FTH IKT

Largest active 13D stakes

Active large-stake positions disclosed in parsed Schedule 13D filings.

ORKA SYRE COGT APGE JBIO VRDN
+4 moreGLTO CBIO DNTH GLYC

Largest active 13G stakes

Passive or institutional large-stake positions disclosed in parsed Schedule 13G filings.

ELVN ANAB ATXS IKT KNSA
How to read these SEC ownership signals
  • Read each filing family separately: Form 13F, Schedules 13D/G, and Forms 3/4/5 answer different SEC disclosure questions and should not be blended into one ownership total.
  • Use 13F values for visible U.S.-listed equity portfolios, 13D/G rows for large beneficial-owner stakes, and Forms 3/4/5 rows for reporting-owner positions and transactions.
  • Open the linked research path when you need the filing, CIK, issuer, CUSIP, date, or source trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
200 Barr Harbor Drive, Suite 400, West Conshohocken, PA, 19428
EDGAR profile Static EDGAR fields kept behind disclosure so the main profile stays readable. 2 profile fields available
Incorporated in
DE
Fiscal year end
31 December

Filer intelligence

What SEC filings say about Fairmount Funds Management LLC

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

Open 13F portfolio Save filer

Quick read

  • Latest parsed 13F shows $1.51B across 12 reported holdings for Q2 2026.
  • Largest parsed 13F holding: ORKA at $352.63M.
  • 5 recent 13D/G stake rows found; top row is CBIO at 17% ownership.
  • Forms 3/4/5 show insider context for COGT worth $789.38M.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed
13F portfolio 12 rows

Quarterly institutional portfolio holdings.

Open
13D/G stakes 5 rows

Beneficial ownership and large-stake disclosures.

Open
Forms 3/4/5 5 rows

Officer, director, and 10% owner holdings or transactions.

Open

Top parsed 13F holdings

Visual share of the latest parsed 13F portfolio. Values are reported market value, not a recommendation.

Q2 2026 - 14 Aug 2026

Top 5 concentration

75%

Share of latest parsed 13F value represented by the visible holdings below.

Top 5 reported value

$1.14B

Compared with $1.51B total 13F value.

Top 5 net change

$0

Position-value change inside the visible top holdings only.

13F concentration map

A simple visual split of the latest parsed 13F portfolio.

Largest add: VRDN · Largest trim: SYRE

ORKA DNTH DMRA COGT JBIO Other holdings

ORKA

23.3%

Oruka Therapeutics Inc

$352.63M

DNTH

16.3%

Dianthus Therapeutics Inc

$247.33M

DMRA

15%

Damora Therapeutics Inc

$226.63M

COGT

14.1%

Cogent Biosciences Inc

$212.98M

JBIO

6.7%

Jade Biosciences Inc

$101.18M

13D/G large-stake context

CBIO

16 Jul 2026 · Ordinary Shares, $0.001 par value

17%
Issuer page 13D/G history

ORKA

01 Jul 2026 · Common Stock, $0.001 par value per share

20%
Issuer page 13D/G history

SYRE

23 Jun 2026 · Common Stock, $0.0001 par value

10%
Issuer page 13D/G history

APGE

18 Jun 2026 · Common Stock, $0.00001 par value

10%
Issuer page 13D/G history

Forms 3/4/5 insider context

COGT

31 Mar 2026

$789.38M
Issuer page Owner page

ORKA

01 Jul 2026 · 10% owner

$221.79M
Issuer page Owner page

DMRA

23 Mar 2026 · 10% owner

$190.12M
Issuer page Owner page

VRDN

11 May 2026 · 10% owner

$172.66M
Issuer page Owner page

Latest update

What changed recently for Fairmount Funds Management LLC

New filing available

Latest 13F period: Q2 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

14 Aug 2026

Page type

Filer profile

Latest period

Q2 2026

Institutional portfolio context was refreshed from a 13F filing filed on 14 Aug 2026.

Open filer profile Browse recent public updates

Benchmark Context

Benchmark context for this company

Fairmount Funds Management LLC has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.

Compared with

Start on the facts page for period-to-period context, then open a metric ranking when you want to compare the same reported fact across other SEC-reporting companies.

Why this is notable

Latest 13F period: Q2 2026. That gives you a fresh baseline before you compare this company with peers.

  • Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
  • Open the facts page first if you want the cleanest path to verification.

Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.

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SEC filing record

CIK 0001802528 filing coverage

Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.

SEC filings
64
First seen
12 Feb 2020
Latest filing
14 Aug 2026
Entity
Company

Observed form types

13F-HR SCHEDULE 13D SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A

CIK-linked evidence first

Fairmount Funds Management LLC SEC filings Fairmount Funds Management LLC 13F portfolio Fairmount Funds Management LLC 13D/G history Fairmount Funds Management LLC owner filings Open SEC filing index

Latest Filings

Showing the latest 12 of 64 SEC filings for Fairmount Funds Management LLC.

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13F-HR

13F-HR filing

Filing date
14 Aug 2026
Reporting date
30 Jun 2026
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
20 Jul 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
01 Jul 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
23 Jun 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
23 Jun 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
09 Jun 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
15 May 2026
Reporting date
Not listed
SEC evidence
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13F-HR

13F-HR filing

Filing date
15 May 2026
Reporting date
31 Mar 2026
SEC evidence
Open document Open filing
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
13 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
04 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
20 Apr 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
31 Mar 2026
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
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