A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.

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New filings appear as the SEC updates EDGAR, and older records can vary by availability.

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Updates follow new EDGAR submissions and periodic data refreshes.

Filer Snapshot

Ulrik B. Nielsen

CIK 0001531962. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Individual

Total Filings

Latest Filing

08 Jun 2023

Industry

n/a

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Open 13F if you want portfolio holdings.
Open 13D/G or insider pages only when this CIK has those rows.

Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 08 Jun 2023 for CIK 0001531962.

View Source Filing

Business address: Merrimack Pharmaceuticals, Inc., One Kendall Square, Suite B7201, Cambridge, MA, 02139

Filer intelligence

What SEC filings say about Ulrik B. Nielsen

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

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Quick read

Forms 3/4/5 show insider context for MACK.

SEC source mix

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

XML parsed

13F portfolio No rows yet

Quarterly institutional portfolio holdings.

Open

13D/G stakes No rows yet

Beneficial ownership and large-stake disclosures.

Open

Forms 3/4/5 1 rows

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

Open

Forms 3/4/5 insider context

MACK

06 Jun 2023

Issuer page Owner page

Latest update

What changed recently for Ulrik B. Nielsen

Ownership report updated

Latest ownership report period: 06 Jun 2023. Open the source-backed page to inspect the fresh filing or facts context.

Update date

08 Jun 2023

Page type

Ownership filings

Latest period

06 Jun 2023

Ownership context was refreshed from SEC Forms 3/4/5 filed on 08 Jun 2023.

Open ownership filings Browse recent public updates

SEC filing record

CIK 0001531962 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

First seen

01 Feb 2012

Latest filing

08 Jun 2023

Entity

Individual

Observed form types

4 4/A 3

Primary evidence

Open SEC filing index Ulrik B. Nielsen SEC filings Ulrik B. Nielsen owner filings

Latest Filings

Recent SEC filings for Ulrik B. Nielsen with direct links to document and filing folders.

4 File 001-35409

4

Filing date: 08 Jun 2023
Reporting date: 06 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 07 Jun 2022
Reporting date: 06 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 25 Jan 2022
Reporting date: 24 Jan 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 14 Jun 2021
Reporting date: 10 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 03 Aug 2020
Reporting date: 30 Jul 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 21 Oct 2019
Reporting date: 17 Oct 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 15 Jun 2018
Reporting date: 13 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 15 Sep 2017
Reporting date: 13 Sep 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 13 Sep 2017
Reporting date: 11 Sep 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 SUBMISSION

Filing date: 16 Jun 2016
Reporting date: 14 Jun 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 22 Jul 2015
Reporting date: 20 Jul 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 19 Jun 2015
Reporting date: 19 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 19 May 2015
Reporting date: 19 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 18 May 2015
Reporting date: 13 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 001-35409

FORM 4/A -

Filing date: 18 May 2015
Reporting date: 20 Apr 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 20 Apr 2015
Reporting date: 20 Apr 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 20 Mar 2015
Reporting date: 19 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 06 Mar 2015
Reporting date: 04 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 24 Feb 2015
Reporting date: 23 Feb 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 28 Aug 2014
Reporting date: 26 Aug 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 29 May 2014
Reporting date: 27 May 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 13 Feb 2014
Reporting date: 11 Feb 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 26 Apr 2013
Reporting date: 24 Apr 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 13 Mar 2013
Reporting date: 12 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 04 Dec 2012
Reporting date: 03 Dec 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 27 Aug 2012
Reporting date: 23 Aug 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-35409

FORM 4 -

Filing date: 17 Jul 2012
Reporting date: 16 Jul 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-35409

FORM 3 -

Filing date: 01 Feb 2012
Reporting date: 31 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

Ulrik B. Nielsen

Follow future filing-backed changes

What SEC filings say about Ulrik B. Nielsen

Quick read

SEC source mix

Forms 3/4/5 insider context

What changed recently for Ulrik B. Nielsen

CIK 0001531962 filing coverage

Latest Filings

4

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 -

FORM 4 -

FORM 4 -

FORM 4 -

FORM 4/A -

FORM 4 -

FORM 4 -

FORM 4 -

FORM 4 -

FORM 4 -

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FORM 4 -

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FORM 4 -

FORM 3 -

Related pages for Ulrik B. Nielsen