PartnerFacts
Data last updated: Oct 23, 2026, 5:45 PM ETLatest filing: Oct 22, 2026Now: Oct 24, 2026, 5:01 AM ET

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Claudio Nessi

Named as an officer, director or promoter on SEC Form D filings · NH, MA · Aug 13, 2013 → Oct 23, 2019

4deals (issuers)
$677.5Mreported sold
100investors
16Form D filings
2013–2019years on file
Follow this personLook further ↓PDF

Data last updated Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 24, 2026, 2:29 AM ET · SEC enforcement last checked: covered by the index scan as of Oct 24, 2026, 2:50 AM ET

The short version

Claudio Nessi is listed as an executive officer and director on 16 SEC Form D filings by 4 issuers between Aug 2013 and Apr 2025: Omega Fund VIII, L.P. (Boston, MA — pooled investment fund — 2023–2025; $580.5M reported sold to 66 investors), X4 Pharmaceuticals, Inc (Boston, MA — biotechnology — 2013–2017; $85M reported sold to 23 investors), Avitide, Inc. (Lebanon, NH — biotechnology — 2015–2019; $12M reported sold to 11 investors) and Omega Fund VI, L.P. (Boston, MA — pooled investment fund — 2018).

What this means A repeat sponsor — 4 separate companies raised money with this person listed as executive officer and director, over about 12 years. Across those companies the filings report $677.5M sold in total.

Listed alongside Tillman U. Gerngross (12 shared filings), Michael Ross (9 shared filings), Carl L. Gordon (7 shared filings), Eszter Nagy (7 shared filings), Terrance McGuire (7 shared filings) and 29 others.

What this means These are the other officers, directors or promoters the companies named on the same forms — the team around Claudio. Each name links to their own page.

The issuers belong to 2 sponsor groups: Omega (7 issuers, $1.25B reported sold, 2010–2025) and X4 Pharmaceuticals (2 issuers, $120M reported sold, 2010–2025).

What this means This person is listed across more than one sponsor team; each group page shows that team's full track record.

Public records searched: federal courts (CourtListener / RECAP), SEC enforcement releases, state securities regulators (AZ, CA, DE, TX, WA) — 1 court case matching the name, 2 bankruptcy cases matching the name listed in Key records below.

What this means 3 records came back. Each one is listed below with a link to the original document and a line saying why it matched. A name match is not proof it is the same person or company — read the why line and the document. Being sued or named in a release is an accusation, not a finding.

We compared 16 public filings for Claudio Nessi and found 9 differences: No amendment in the last 12 months on an offering that may still be open; Industry group changed between filings; and more below.

What this means These are differences between the sponsor's own SEC filings — both values, dates and sources are listed in Key records, section 4. Most have ordinary explanations; ask the sponsor.

What the community is saying

Community search for Claudio Nessi has not run yet — it is #3,519 of 4,533 in line; searches run around the clock at the hosts' allowed rate. Searched so far: 27 names.

Community comments are quoted as written by their authors. Sources searched: BiggerPockets forums (via DuckDuckGo, Brave, Bing and BiggerPockets search) and Reddit (search feed + public archive).

Key records

Five things investors ask first. Items still in human review are counted, not shown.

1. Lawsuits

1 case: 1 judgment

NESSI v. XM SATELLITE RADIO HOLDINGS, INC. judgment
District Court, D. New Jersey · No. 2:07-cv-02820 · Filed Jun 18, 2007 · Closed Sep 26, 2008 · Nature of suit: Contract: Other · Cause: 28:1332 Diversity-Breach of Contract
Role of NESSI: Plaintiff · Outcome: Terminated 2008-09-26 — FJC Integrated Database disposition: Judgment on motion before trial; judgment for defendant Docket on CourtListener ↗
same rare surname (4 people in Form D filings, 3 federal dockets); surname only in the caption; court in NJ (not a filing state)
What was searched

Sources searched: CourtListener bulk data (RECAP dockets as of 2026-09-30; recall-first rule 10-24) — federal district + bankruptcy courts State courts: not covered (one-tap state court links under Look further). PACER: not searched. · Last checked Oct 24, 2026, 2:29 AM ET.

Court records show docket facts only; we never restate allegations as facts. Outcome wording comes from the docket feed; where it does not state a disposition we say so.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

2. Regulatory actions

None found in sources searched — SEC enforcement releases (index scan as of Oct 24, 2026, 2:50 AM ET) · state securities regulators: AZ, CA, DE, TX, WA (crawled Oct 23, 2026)

What was searched

SEC enforcement searched: SEC litigation releases and administrative proceedings — respondent names in the sec.gov index titles (30,205 releases, 1995-09-19 to 2026-10-23); release text is read only to confirm a candidate. Names that appear only in the body of a release are not found. — Searched SEC litigation releases and administrative proceedings (1995→ / 2007→) (30,205 records as of Oct 24, 2026, 2:50 AM ET) — nothing matched Claudio Nessi..

State securities regulators searched: AZ (Corporation Commission Securities Division), CA (DFPI — 16 of 12,159 DFPI respondent pages read so far; sponsor-name matches are read first), DE (DOJ Investor Protection Unit), TX (State Securities Board), WA (DFI) — last crawled Oct 23, 2026, 9:57 PM ET. Other states are not covered.

3. Bankruptcies

2 cases: 2 closed (disposition not in docket feed)

Nessi's Trucking LLC closed
United States Bankruptcy Court, M.D. Florida · No. 6:16-bk-07872 · Filed Dec 2, 2016 · Closed Apr 18, 2017
Role of Nessi's Trucking LLC: Debtor · Outcome: Case closed 2017-04-18 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same rare surname (4 people in Form D filings, 3 federal dockets); surname only in the caption; court in FL (not a filing state)
NESSI CORP. closed
United States Bankruptcy Court, D. Delaware · No. 83-00105 · Filed Mar 25, 1983 · Closed Oct 24, 1983
Role of NESSI CORP.: Debtor · Outcome: Case closed 1983-10-24 (disposition not included in the bulk docket feed — see docket) Docket on CourtListener ↗
same rare surname (4 people in Form D filings, 3 federal dockets); surname only in the caption; court in DE (not a filing state)
What was searched

Sources searched: Federal bankruptcy courts via CourtListener / RECAP archive (federal district courts, federal bankruptcy courts). State courts: not covered (one-tap state court links under Look further). PACER: not searched (RECAP only). · Last checked Oct 24, 2026, 2:29 AM ET.

Court records show docket facts only; we never restate allegations as facts. Outcome wording comes from the docket feed; where it does not state a disposition we say so.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

4. Differences between public sources

Comparisons cover issuers and sponsor groups — see the issuer pages under Deals

9 differences found between the filings for Claudio Nessi (compared 16 filings on Oct 24, 2026)

Note · Apr 28, 2023 – Apr 22, 2025

No amendment in the last 12 months on an offering that may still be open — Omega Fund VIII, L.P. (latest filing Apr 22, 2025)

The latest filing for this offering is dated Apr 22, 2025 (first sale Apr 28, 2023). It reports $580,475,000 sold of an indefinite amount offered. No later amendment is in our index as of Oct 24, 2026.

What this means SEC rules expect a yearly amendment while an offering is still going. The raise may simply have ended — a Form D does not say when it closed. Ask the sponsor whether the offering closed, when, and at what amount.

Form D/A · Apr 22, 2025 ↗Omega Fund VIII, L.P. — PartnerFacts page ↗
Sources
Note · Apr 24, 2017 – May 8, 2017

No amendment in the last 12 months on an offering that may still be open — X4 Pharmaceuticals, Inc (latest filing May 8, 2017)

The latest filing for this offering is dated May 8, 2017 (first sale Apr 24, 2017). It reports $45,539,314 sold of $50,539,341 offered. No later amendment is in our index as of Oct 24, 2026.

What this means SEC rules expect a yearly amendment while an offering is still going. The raise may simply have ended — a Form D does not say when it closed. Ask the sponsor whether the offering closed, when, and at what amount.

Form D · May 8, 2017 ↗X4 Pharmaceuticals, Inc — PartnerFacts page ↗
Sources
Note · Jul 23, 2015 – Aug 6, 2015

No amendment in the last 12 months on an offering that may still be open — Avitide, Inc. (latest filing Aug 6, 2015)

The latest filing for this offering is dated Aug 6, 2015 (first sale Jul 23, 2015). It reports $3,831,920 sold of $7,663,840 offered. No later amendment is in our index as of Oct 24, 2026.

What this means SEC rules expect a yearly amendment while an offering is still going. The raise may simply have ended — a Form D does not say when it closed. Ask the sponsor whether the offering closed, when, and at what amount.

Form D · Aug 6, 2015 ↗Avitide, Inc. — PartnerFacts page ↗
Sources
Note · Aug 6, 2015 – Oct 23, 2019

Industry group changed between filings — Avitide, Inc.

"Biotechnology" (Aug 6, 2015); then "Pharmaceuticals" (Jun 27, 2017 to Aug 24, 2018); then "Biotechnology" (Oct 23, 2019).

What this means The issuer described its business differently on different forms. Often it is just a different box ticked; sometimes the deal itself changed. Ask which business your money is in.

Form D · Aug 6, 2015 ↗Form D · Jun 27, 2017 ↗Form D · Oct 23, 2019 ↗Avitide, Inc. — PartnerFacts page ↗
Sources
Note · Jan 14, 2026

Same name, different state: "Claudio Nessi" (PA) is a separate record

This page covers filings where the address state is NH or MA. A separate record, "Claudio Nessi" with address state PA, is listed on 1 filing — most recently by Alveus Therapeutics, Inc. (Jan 14, 2026). The two records do not overlap in time: this page runs Aug 13, 2013 to Oct 23, 2019; the other has one filing dated Jan 14, 2026.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Claudio Nessi (PA) — PartnerFacts page ↗Form D · Jan 14, 2026 ↗Alveus Therapeutics, Inc. — PartnerFacts page ↗Claudio Nessi (NH,MA) — this page ↗
Sources
Note · Jan 5, 2026

Same name, different state: "Claudio Nessi" (FL) is a separate record

This page covers filings where the address state is NH or MA. A separate record, "Claudio Nessi" with address state FL, is listed on 1 filing — most recently by Spiro Medical Inc. (Jan 5, 2026). The two records do not overlap in time: this page runs Aug 13, 2013 to Oct 23, 2019; the other has one filing dated Jan 5, 2026.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Claudio Nessi (FL) — PartnerFacts page ↗Form D · Jan 5, 2026 ↗Spiro Medical Inc. — PartnerFacts page ↗Claudio Nessi (NH,MA) — this page ↗
Sources
Note · Oct 20, 2020

Same name, different state: "Claudio Nessi" (NY) is a separate record

This page covers filings where the address state is NH or MA. A separate record, "Claudio Nessi" with address state NY, is listed on 1 filing — most recently by Nuvation Bio Inc. (Oct 20, 2020). The two records do not overlap in time: this page runs Aug 13, 2013 to Oct 23, 2019; the other has one filing dated Oct 20, 2020.

What this means Could be the same person who moved, or two people with the same name. We keep them apart until a filing ties them together. Check both pages before you decide.

Claudio Nessi (NY) — PartnerFacts page ↗Form D · Oct 20, 2020 ↗Nuvation Bio Inc. — PartnerFacts page ↗Claudio Nessi (NH,MA) — this page ↗
Sources
Note · Jun 5, 2015 – Dec 30, 2015

Address moved from Lebanon, NH to Waltham, MA — X4 Pharmaceuticals, Inc

The people listed on the Jun 5, 2015 filing give Lebanon, NH; on the Dec 30, 2015 filing they give Waltham, MA.

What this means Businesses move; this just shows the two places and dates. If you were told one city and the forms say another, ask which is current.

Form D/A · Jun 5, 2015 ↗Form D · Dec 30, 2015 ↗X4 Pharmaceuticals, Inc — PartnerFacts page ↗
Sources
Note · Aug 13, 2013 – Apr 22, 2025

Claudio Nessi is listed with 2 different address states: NH, MA

NH on 8 filings (Aug 13, 2013 to Oct 23, 2019); MA on 8 filings (Dec 30, 2015 to Apr 22, 2025).

What this means The address on a Form D is usually the company's, not the person's home, so this often just reflects different companies. It can also mean a move. Nothing wrong by itself.

Form D · Aug 13, 2013 ↗Form D · Dec 30, 2015 ↗
Sources
What is compared

What is compared: every Form D and D/A we hold for this subject, side by side — filing dates vs. first-sale dates (the 15-day rule), amendment timing on open offerings (the yearly-amendment expectation), amounts sold, investor counts, offering amounts and minimums across amendments, industry and size bands, addresses, how each person's name and role is written, paid sellers' CRD numbers, and (for groups) where the member companies were formed and sit. Everything is as filed by the issuer; the SEC does not check it. Differences are common and usually have ordinary explanations — we show both values, the dates, and the source so you can ask. As of Oct 24, 2026.

5. Money to insiders

2 of 12 offerings report sales commissions totalling $2,015,188; 0 report finder's fees; 5 report proceeds to related persons totalling $5,564,460. (includes amounts the issuer reported as estimates)

Offering (latest filing)Sales commissionsFinder's feesTo insidersPaid to sell itSource
Apr 22, 2025 D/A
Omega Fund VIII, L.P.
File 021-480232
$615,188$0$0
The General Partner may receive payments deemed to be made from the proceeds of the offering including management fees and/or incentive allocations. The amount of such fees cannot be estimated at this time.
J.P. MORGAN SECURITIES LLC BrokerCheck CRD 79 ↗EDGAR ↗
Oct 23, 2019 D
Avitide, Inc.
File 021-351722
$0$0$0None listed on this filingEDGAR ↗
Nov 9, 2018 D
Omega Fund VI, L.P.
File 021-325427
$0$0$0
The Issuer's General Partner is entitled to a management fee payable by the Issuer.
None listed on this filingEDGAR ↗
Aug 24, 2018 D
Avitide, Inc.
File 021-319991
$0$0$672,000 (est.)
Includes salary and bonuses payable in the ordinary course of business.
None listed on this filingEDGAR ↗
Jan 2, 2018 D
Avitide, Inc.
File 021-302123
$0$0$440,000 (est.)
Includes salary and bonuses payable in the ordinary course of business.
None listed on this filingEDGAR ↗
Dec 4, 2017 D
X4 Pharmaceuticals, Inc
File 021-300012
$1,400,000$0$0Citigroup Global Markets Inc. BrokerCheck CRD 7059 ↗
Cowen and Company, LLC BrokerCheck CRD 7616 ↗
Piper Jaffray & Co. BrokerCheck CRD 665 ↗		EDGAR ↗
Jun 27, 2017 D
Avitide, Inc.
File 021-289476
$0$0$682,460 (est.)
Includes salary and bonuses payable in the ordinary course of business.
None listed on this filingEDGAR ↗
May 8, 2017 D
X4 Pharmaceuticals, Inc
File 021-286233
$0$0$3,000,000 (est.)None listed on this filingEDGAR ↗
Apr 27, 2016 D
X4 Pharmaceuticals, Inc
File 021-262117
$0$0$770,000 (est.)
Ordinary course compensation for services.
None listed on this filingEDGAR ↗
Dec 30, 2015 D
X4 Pharmaceuticals, Inc
File 021-254201
$0$0$0None listed on this filingEDGAR ↗
Aug 6, 2015 D
Avitide, Inc.
File 021-245207
$0$0$0None listed on this filingEDGAR ↗
Jun 5, 2015 D/A
X4 Pharmaceuticals, Inc
File 021-201235
$0$0$0None listed on this filingEDGAR ↗
How this is counted

Counts come from Form D Items 12–15 on the filings in our index (latest filing per offering; one offering = one SEC file number; an amendment updates its offering rather than adding one). "To insiders" = gross proceeds used for payments to executive officers, directors or promoters. "—" = not reported on that filing. Amounts marked (est.) were reported as estimates. "Paid to sell it" = sales compensation recipients named on that filing (Item 12), each linked to FINRA BrokerCheck when a CRD number is reported.

Counted across every filing this person is listed on (latest filing per offering, per issuer).

Deals 4

Every issuer that named Claudio Nessi on a Form D, newest first. A Form D is the notice a company files after it starts selling a private investment.

OF
Pooled Investment Fund · group: Omega

Omega Fund VIII, L.P.

Boston, MA · Apr 27, 2023 → Apr 22, 2025 · 3 filings
  • Apr 22, 2025 · D/A · $580,475,000 sold of Indefinite · 66 investors · min. No minimum reported · role: Executive Officer (Director of the General Partner of the General Partner of the Issuer) EDGAR ↗
  • Apr 23, 2024 · D/A · $470,025,000 sold of Indefinite · 41 investors · min. No minimum reported · role: Executive Officer (Director of the General Partner of the General Partner of the Issuer) EDGAR ↗
  • Apr 27, 2023 · D · $0 sold of Indefinite · 0 investors · min. No minimum reported · role: Executive Officer (Director of the General Partner of the General Partner of the Issuer) EDGAR ↗

Raised $580.5M from 66 investors as of the latest filing. Claudio is listed as executive officer on 3 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

A
Biotechnology

Avitide, Inc.

Lebanon, NH · Aug 6, 2015 → Oct 23, 2019 · 5 filings
  • Oct 23, 2019 · D · $9,999,796 sold of $9,999,796 · 9 investors · min. No minimum reported · role: Director EDGAR ↗
  • Aug 24, 2018 · D · $6,212,290 sold of $6,212,290 · 4 investors · min. No minimum reported · role: Director EDGAR ↗
  • Jan 2, 2018 · D · $3,999,983 sold of $3,999,983 · 3 investors · min. No minimum reported · role: Director EDGAR ↗
  • Jun 27, 2017 · D · $11,999,962 sold of $11,999,962 · 10 investors · min. No minimum reported · role: Director EDGAR ↗
  • Aug 6, 2015 · D · $3,831,920 sold of $7,663,840 · 11 investors · min. No minimum reported · role: Director EDGAR ↗

Raised $12M from 11 investors (100% of the $10M target) as of the latest filing. Claudio is listed as director on 5 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Biotechnology / 506(b) (3,253 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

OF
Pooled Investment Fund · group: Omega

Omega Fund VI, L.P.

Boston, MA · Nov 9, 2018
  • Nov 9, 2018 · D · $0 sold of $400,000,000 · 0 investors · min. No minimum reported · role: Executive Officer (Director of the General Partner of the General Partner of the Issuer) EDGAR ↗

No sales reported yet as of the latest filing. Claudio is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pooled Investment Fund / 506(b) (83,801 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

XP
Biotechnology · group: X4 Pharmaceuticals

X4 Pharmaceuticals, Inc

Boston, MA · Aug 13, 2013 → Dec 4, 2017 · 7 filings
  • Dec 4, 2017 · D · $20,000,000 sold of $20,000,000 · 1 investors · min. No minimum reported · role: Director EDGAR ↗
  • May 8, 2017 · D · $45,539,314 sold of $50,539,341 · 18 investors · min. No minimum reported · role: Director EDGAR ↗
  • Apr 27, 2016 · D · $15,007,220 sold of $15,007,220 · 10 investors · min. No minimum reported · role: Director EDGAR ↗
  • Dec 30, 2015 · D · $4,000,000 sold of $4,000,000 · 8 investors · min. No minimum reported · role: Director EDGAR ↗
  • Jun 5, 2015 · D/A · $20,000,000 sold of $20,000,000 · 8 investors · min. No minimum reported · role: Director EDGAR ↗
  • Aug 11, 2014 · D/A · $12,999,999 sold of $20,000,000 · 8 investors · min. No minimum reported · role: Director EDGAR ↗
  • Aug 13, 2013 · D · $12,999,999 sold of $20,000,000 · 8 investors · min. No minimum reported · role: Director EDGAR ↗

Raised $85M from 23 investors (100% of the $20M target) as of the latest filing. Claudio is listed as director on 7 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Biotechnology / 506(c) (163 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

Other pages with the same name (3)

Separate person records under the same name, not combined with this page. Each line says whether it shares an issuer with this record.

  • Claudio Nessi — NY, 1 issuer, Oct 20, 2020 → Oct 20, 2020 · no shared issuer
  • Claudio Nessi — PA, 1 issuer, Jan 14, 2026 → Jan 14, 2026 · no shared issuer
  • Claudio Nessi — FL, 1 issuer, Jan 5, 2026 → Jan 5, 2026 · no shared issuer

People around Claudio 34

Officers, directors, promoters and management entities named on the same filings, as of Oct 23, 2026, 5:45 PM ET.

OF
Management entity

Omega Fund VIII GP, L.P.

Promoter · 3 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

OF
Management entity

Omega Fund VIII GP Manager, Ltd.

Promoter · 3 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

OF
Management entity

Omega Fund VI GP Manager, Ltd.

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

OF
Management entity

Omega Fund VI GP, L.P.

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

OF
Management entity

Omega Fund Management, LLC

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

TG
No photo found yet (own website and image search run after this page is viewed)
Person

Tillman U. Gerngross

Executive Officer, Director · 12 shared filings (2 issuers) · also on 6 other issuers

Tillman U. Gerngross is on 8 issuers in total — a repeat sponsor. Their page lists every one.

MR
No photo found yet (own website and image search run after this page is viewed)
Person

Michael Ross

Director · 9 shared filings (2 issuers) · also on 28 other issuers

Michael Ross is on 30 issuers in total — a repeat sponsor. Their page lists every one.

CG
No photo found yet (own website and image search run after this page is viewed)
Person

Carl L. Gordon

Director · 7 shared filings (1 issuer) · also on 61 other issuers

Carl L. Gordon is on 62 issuers in total — a repeat sponsor. Their page lists every one.

TM
No photo found yet (own website and image search run after this page is viewed)
Person

Terrance McGuire

Director · 7 shared filings (1 issuer) · also on 20 other issuers

Terrance McGuire is on 21 issuers in total — a repeat sponsor. Their page lists every one.

EN
No photo found yet (own website and image search run after this page is viewed)
Person

Eszter Nagy

Executive Officer, Director · 7 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

AS
No photo found yet (own website and image search run after this page is viewed)
Person

Amy Schulman

Director · 5 shared filings (1 issuer) · also on 19 other issuers

Amy Schulman is on 20 issuers in total — a repeat sponsor. Their page lists every one.

PF
No photo found yet (own website and image search run after this page is viewed)
Person

Philip Ferneau

Director · 5 shared filings (1 issuer) · also on 12 other issuers

Philip Ferneau is on 13 issuers in total — a repeat sponsor. Their page lists every one.

KI
No photo found yet (own website and image search run after this page is viewed)
Person

Kevin Isett

Executive Officer, Director · 5 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

RG
No photo found yet (own website and image search run after this page is viewed)
Person

Rishi Gupta

Director · 5 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

IR
No photo found yet (own website and image search run after this page is viewed)
Person

Ian Ratcliffe

Director · 4 shared filings (1 issuer) · also on 1 other issuer

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

SK
No photo found yet (own website and image search run after this page is viewed)
Person

Scott Kennedy

Executive Officer · 4 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

OS
No photo found yet (own website and image search run after this page is viewed)
Person

Otello Stampacchia

Executive Officer · 4 shared filings (2 issuers) · also on 5 other issuers

Otello Stampacchia is on 7 issuers in total — a repeat sponsor. Their page lists every one.

MG
No photo found yet (own website and image search run after this page is viewed)
Person

Michael Gray

Executive Officer · 3 shared filings (1 issuer) · also on 1 other issuer

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

WK
No photo found yet (own website and image search run after this page is viewed)
Person

Warren Kett

Executive Officer · 3 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

DB
No photo found yet (own website and image search run after this page is viewed)
Person

Dan Burgess

Director · 3 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

RR
No photo found yet (own website and image search run after this page is viewed)
Person

Rene Russo

Executive Officer, Director · 3 shared filings (1 issuer) · also on 2 other issuers

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

EA
No photo found yet (own website and image search run after this page is viewed)
Person

Errik Anderson

Executive Officer, Director · 2 shared filings (1 issuer) · also on 16 other issuers

Errik Anderson is on 17 issuers in total — a repeat sponsor. Their page lists every one.

AR
No photo found yet (own website and image search run after this page is viewed)
Person

AJAY ROYAN

Director · 2 shared filings (1 issuer) · also on 4 other issuers

AJAY ROYAN is on 5 issuers in total — a repeat sponsor. Their page lists every one.

CG
No photo found yet (own website and image search run after this page is viewed)
Person

Colin Greenspon

Director · 2 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

DM
No photo found yet (own website and image search run after this page is viewed)
Person

David Mantus

Executive Officer · 2 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

CS
No photo found yet (own website and image search run after this page is viewed)
Person

Chris Stevens

Executive Officer · 2 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

FD
No photo found yet (own website and image search run after this page is viewed)
Person

Francesco Draetta

Executive Officer · 2 shared filings (1 issuer) · also on 1 other issuer

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

JA
No photo found yet (own website and image search run after this page is viewed)
Person

Jan Adams

Director · 2 shared filings (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

RL
No photo found yet (own website and image search run after this page is viewed)
Person

Richard Lim

Executive Officer · 1 shared filing (1 issuer) · also on 6 other issuers

Richard Lim is on 7 issuers in total — a repeat sponsor. Their page lists every one.

WC
No photo found yet (own website and image search run after this page is viewed)
Person

WILLIAM CLARK

Director · 1 shared filing (1 issuer) · also on 1 other issuer

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

DB
No photo found yet (own website and image search run after this page is viewed)
Person

Daniel D Burgess

Director · 1 shared filing (1 issuer) · also on 7 other issuers

Daniel D Burgess is on 8 issuers in total — a repeat sponsor. Their page lists every one.

JS
No photo found yet (own website and image search run after this page is viewed)
Person

Jon Sheller

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

DM
No photo found yet (own website and image search run after this page is viewed)
Person

David McGirr

Director · 1 shared filing (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

AP
No photo found yet (own website and image search run after this page is viewed)
Person

Anne-Mari Paster

Executive Officer · 1 shared filing (1 issuer)

Listed on the same filings as Claudio Nessi. Their page shows their other deals.

The team behind the deals

O
Sponsor group

Omega

7 issuers · 11 filings · $1.25B reported sold · 2010–2025

One team, 7 deal companies. Claudio Nessi is listed on 2 of them.

Sources

Issuers are grouped when their Form D filings share related persons, a management entity or a business address (automatic match from the filings). "Listed" marks the issuers that name Claudio Nessi.

XP
Sponsor group

X4 Pharmaceuticals

2 issuers · 16 filings · $120M reported sold · 2010–2025

One team, 2 deal companies. Claudio Nessi is listed on 1 of them.

Sources

Issuers are grouped when their Form D filings share related persons, a management entity or a business address (automatic match from the filings). "Listed" marks the issuers that name Claudio Nessi.

Same business address

51 other issuers file from the same address (first 50 shown)

A shared address can mean the same team, a shared office building or a registered agent. It is a lead, not a conclusion.

Registrations and other filings

Adviser registration (Form ADV)

A person is never an adviser firm. 1 of the 4 issuers this person is listed on matches a Form ADV adviser (searched 24,962 advisers as of Oct 2, 2026): Omega Fund VI, L.P..

Other offering types (Regulation A and Regulation Crowdfunding)

Searched SEC Regulation A Data Sets (Forms 1-A, 1-K, 1-Z; 2015 Q2 → 2026 Q3); SEC Crowdfunding Offerings Data Sets (Form C family; 2016 Q2 → 2026 Q3); EDGAR form index for 2026 Q3 → 2026 Q4 (51,358 records as of Oct 23, 2026, 8:41 PM ET) — nothing matched this name.

Property records none — individuals are not matched

Property records are matched to companies only, never to individuals, so none are matched to Claudio Nessi by design. Searched property records in Hillsborough County FL (Clerk recorded-document index Oct 14, 2026 to Oct 15, 2026 + FL DOR 2026 ownership roll), Miami-Dade County FL (FL DOR 2026 ownership roll), Harris County TX (HCAD 2026 ownership roll), Dallas County TX (DCAD 2026 ownership roll), New York City ACRIS documents and PLUTO ownership rows already retrieved for other issuers, Cook County IL sale and ownership rows already retrieved for other issuers (814,874 records as of Oct 23, 2026, 8:59 PM ET) for the 4 issuers this person is listed on — nothing matched.

Public profiles and social

Websites and social links of the issuers Claudio Nessi is listed on: none on file. No website or social profile named in X4 Pharmaceuticals, Inc's SEC filings (Form C, Reg A, Form ADV; checked Oct 24, 2026). Web search for this name: #62,870 of 374,652 in line (14 issuers searched so far). One-tap searches: Look further ↓

Look further

One-tap searches on sites we do not index ourselves, with the name pre-filled (Boston, MA). Each opens in a new tab; what you find there is not verified by PartnerFacts.

Social and web

LinkedIn people search ↗Instagram ↗X (Twitter) ↗Facebook ↗YouTube ↗Google ↗Google Images ↗Google News ↗Meta Ad Library ↗

Courts

CourtListener / RECAP (federal) ↗PACER case locator (federal, login) ↗New Hampshire state courts — find the court ↗Massachusetts MassCourts ↗

Securities regulators

SEC EDGAR full-text search ↗SEC action look-up ↗FINRA BrokerCheck ↗SEC IAPD adviser search ↗

Business registries

New Hampshire Secretary of State business search ↗Massachusetts Secretary of State business search ↗OpenCorporates ↗

Change history

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