Research paths
Mark D. Ein
Filer Snapshot
Mark D. Ein
CIK 0001246840 . SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Entity Type
Individual
Total Filings
135
Latest Filing
12 May 2026
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.
Business address
7925 Jones Branch Dr, Unit 102, Mcclean, VA, 22102
Top holdings (ownership)
LIND, CTOS, DOMA, and SHCO
Top holdings (Schedule 13D)
CTOS
Top holdings (Schedule 13G)
LIND
Filer intelligence
What SEC filings say about Mark D. Ein
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
2 recent 13D/G stake rows found; top row is LIND at 5.1% ownership.
Forms 3/4/5 show insider context for LIND worth $39.13M.
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
2 rows
Beneficial ownership and large-stake disclosures.
Open
Forms 3/4/5
4 rows
Officer, director, and 10% owner holdings or transactions.
Open
13D/G large-stake context
LIND
31 Dec 2025 · Common Stock, $0.0001 par value
5.1%
CTOS
17 Oct 2025 · Common Stock
0%
Forms 3/4/5 insider context
Latest update
What changed recently for Mark D. Ein
Ownership report updated
Latest ownership report period: 08 May 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
12 May 2026
Page type
Ownership filings
Latest period
08 May 2026
Ownership context was refreshed from SEC Forms 3/4/5 filed on 12 May 2026.
Filer Overview
Mark D. Ein has filed 135 SEC EDGAR filings since 17 Feb 2004.
Common forms include 4, 144, SCHEDULE 13G/A, SCHEDULE 13D/A and more.
Latest Filings
Recent SEC filings for Mark D. Ein with direct links to document and filing folders.
4
File 001-35898
4
Filing date
12 May 2026
Reporting date
08 May 2026
Next action
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144
144 filing
Filing date
08 May 2026
Reporting date
Not listed
Next action
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4
File 001-38186
4 filing
Filing date
02 Apr 2026
Reporting date
31 Mar 2026
Next action
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SCHEDULE 13G/A
SCHEDULE 13G/A filing
Filing date
17 Feb 2026
Reporting date
Not listed
Next action
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4
File 001-40605
4 filing
Filing date
20 Jan 2026
Reporting date
16 Jan 2026
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4
File 001-38186
4 filing
Filing date
21 Oct 2025
Reporting date
17 Oct 2025
Next action
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SCHEDULE 13D/A
SCHEDULE 13D/A filing
Filing date
21 Oct 2025
Reporting date
Not listed
Next action
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4
File 001-35898
4 filing
Filing date
12 Aug 2025
Reporting date
08 Aug 2025
Next action
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4
File 001-40605
4 filing
Filing date
11 Apr 2025
Reporting date
19 Jul 2024
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4
File 001-38186
4 filing
Filing date
02 Apr 2025
Reporting date
31 Mar 2025
Next action
Verify source filing
SCHEDULE 13G/A
SCHEDULE 13G/A filing
Filing date
14 Feb 2025
Reporting date
Not listed
Next action
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4
File 001-40605
4 filing
Filing date
21 Jan 2025
Reporting date
16 Jan 2025
Next action
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4
File 001-35898
4 filing
Filing date
12 Aug 2024
Reporting date
08 Aug 2024
Next action
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4
File 001-38186
4 filing
Filing date
05 Aug 2024
Reporting date
31 Jul 2024
Next action
Verify source filing
SC 13G/A
SC 13G/A filing
Filing date
10 May 2024
Reporting date
Not listed
Next action
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4
File 001-38186
4 filing
Filing date
02 Apr 2024
Reporting date
31 Mar 2024
Next action
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4
File 001-40605
4 filing
Filing date
18 Jan 2024
Reporting date
16 Jan 2024
Next action
Verify source filing
4
File 001-35898
4 filing
Filing date
03 Jan 2024
Reporting date
31 Dec 2023
Next action
Verify source filing
4
File 001-35898
4 filing
Filing date
21 Dec 2023
Reporting date
20 Dec 2023
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
14 Nov 2023
Reporting date
10 Nov 2023
Next action
Verify source filing
4
File 001-35898
4 filing
Filing date
04 Oct 2023
Reporting date
30 Sep 2023
Next action
Verify source filing
4
File 001-35898
4 filing
Filing date
10 Aug 2023
Reporting date
08 Aug 2023
Next action
Verify source filing
4
File 001-35898
4 filing
Filing date
05 Jul 2023
Reporting date
30 Jun 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
23 Jun 2023
Reporting date
21 Jun 2023
Next action
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4
File 001-35898
FORM 4 SUBMISSION
Filing date
21 Jun 2023
Reporting date
16 Jun 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
16 Jun 2023
Reporting date
14 Jun 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
14 Jun 2023
Reporting date
12 Jun 2023
Next action
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4
File 001-35898
FORM 4 SUBMISSION
Filing date
13 Jun 2023
Reporting date
09 Jun 2023
Next action
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4
File 001-35898
FORM 4 SUBMISSION
Filing date
09 Jun 2023
Reporting date
07 Jun 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
07 Jun 2023
Reporting date
05 Jun 2023
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
06 Jun 2023
Reporting date
05 Jun 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
05 Jun 2023
Reporting date
01 Jun 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
01 Jun 2023
Reporting date
30 May 2023
Next action
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4
File 001-35898
FORM 4 SUBMISSION
Filing date
30 May 2023
Reporting date
25 May 2023
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
26 May 2023
Reporting date
24 May 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
25 May 2023
Reporting date
23 May 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
23 May 2023
Reporting date
19 May 2023
Next action
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4
File 001-35898
FORM 4 SUBMISSION
Filing date
19 May 2023
Reporting date
17 May 2023
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4
File 001-35898
FORM 4 SUBMISSION
Filing date
17 May 2023
Reporting date
15 May 2023
Next action
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4
File 001-35898
FORM 4 SUBMISSION
Filing date
15 May 2023
Reporting date
11 May 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
11 May 2023
Reporting date
09 May 2023
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
09 May 2023
Reporting date
05 May 2023
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
04 Apr 2023
Reporting date
31 Mar 2023
Next action
Verify source filing
4
File 001-35898
4 filing
Filing date
04 Apr 2023
Reporting date
31 Mar 2023
Next action
Verify source filing
SC 13G/A
SC 13G/A filing
Filing date
14 Feb 2023
Reporting date
Not listed
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
03 Jan 2023
Reporting date
31 Dec 2022
Next action
Verify source filing
4
File 001-40605
4 filing
Filing date
12 Dec 2022
Reporting date
08 Dec 2022
Next action
Verify source filing
4
File 001-40605
4 filing
Filing date
09 Dec 2022
Reporting date
07 Dec 2022
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
04 Oct 2022
Reporting date
30 Sep 2022
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
10 Aug 2022
Reporting date
08 Aug 2022
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
05 Jul 2022
Reporting date
30 Jun 2022
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
18 May 2022
Reporting date
16 May 2022
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
16 May 2022
Reporting date
13 May 2022
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
03 May 2022
Reporting date
29 Apr 2022
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
05 Apr 2022
Reporting date
01 Apr 2022
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
04 Apr 2022
Reporting date
31 Mar 2022
Next action
Verify source filing
4
File 001-39754
FORM 4
Filing date
24 Feb 2022
Reporting date
23 Feb 2022
Next action
Verify source filing
SC 13G/A
SC 13G/A filing
Filing date
14 Feb 2022
Reporting date
Not listed
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
10 Jan 2022
Reporting date
31 Dec 2021
Next action
Verify source filing
4
File 001-39754
FORM 4
Filing date
06 Oct 2021
Reporting date
05 Oct 2021
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
04 Oct 2021
Reporting date
30 Sep 2021
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
11 Aug 2021
Reporting date
08 Aug 2021
Next action
Verify source filing
4
File 001-39754
FORM 4
Filing date
30 Jul 2021
Reporting date
28 Jul 2021
Next action
Verify source filing
4
File 001-40605
FORM 4
Filing date
21 Jul 2021
Reporting date
19 Jul 2021
Next action
Verify source filing
3
File 001-40605
FORM 3
Filing date
14 Jul 2021
Reporting date
14 Jul 2021
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
02 Jul 2021
Reporting date
30 Jun 2021
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
04 Jun 2021
Reporting date
02 Jun 2021
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
21 May 2021
Reporting date
19 May 2021
Next action
Verify source filing
SC 13D
SC 13D
Filing date
14 Apr 2021
Reporting date
Not listed
Next action
Verify source filing
4
File 001-38186
4 filing
Filing date
05 Apr 2021
Reporting date
01 Apr 2021
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
31 Mar 2021
Reporting date
31 Mar 2021
Next action
Verify source filing
SC 13G/A
SC 13G/A filing
Filing date
10 Feb 2021
Reporting date
Not listed
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
05 Jan 2021
Reporting date
31 Dec 2020
Next action
Verify source filing
4
File 001-39754
OWNERSHIP DOCUMENT
Filing date
08 Dec 2020
Reporting date
04 Dec 2020
Next action
Verify source filing
3
File 001-39754
3 filing
Filing date
01 Dec 2020
Reporting date
01 Dec 2020
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
02 Oct 2020
Reporting date
30 Sep 2020
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
11 Aug 2020
Reporting date
08 Aug 2020
Next action
Verify source filing
4
File 001-38186
FORM 4
Filing date
15 Jun 2020
Reporting date
11 Jun 2020
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
17 Mar 2020
Reporting date
16 Mar 2020
Next action
Verify source filing
SC 13G/A
MARK EIN SC 13G/A
Filing date
04 Feb 2020
Reporting date
Not listed
Next action
Verify source filing
4
File 001-38140
FORM 4 SUBMISSION
Filing date
03 Feb 2020
Reporting date
31 Jan 2020
Next action
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4
File 001-38140
OWNERSHIP DOCUMENT
Filing date
27 Aug 2019
Reporting date
23 Aug 2019
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
12 Aug 2019
Reporting date
08 Aug 2019
Next action
Verify source filing
4
File 001-38186
PRIMARY DOCUMENT
Filing date
01 Aug 2019
Reporting date
30 Jul 2019
Next action
Verify source filing
4
File 001-35898
FORM 4 SUBMISSION
Filing date
19 Jul 2019
Reporting date
17 Jul 2019
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
28 Sep 2018
Reporting date
21 Sep 2018
Next action
Verify source filing
4/A
File 001-35898
FORM 4/A
Filing date
28 Sep 2018
Reporting date
02 Mar 2018
Next action
Verify source filing
4
File 001-38140
OWNERSHIP DOCUMENT
Filing date
21 Sep 2018
Reporting date
19 Sep 2018
Next action
Verify source filing
4
File 001-38140
OWNERSHIP DOCUMENT
Filing date
17 Sep 2018
Reporting date
17 Sep 2018
Next action
Verify source filing
4
File 001-38140
FORM 4
Filing date
27 Aug 2018
Reporting date
23 Aug 2018
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
10 Aug 2018
Reporting date
08 Aug 2018
Next action
Verify source filing
4
File 001-38140
OWNERSHIP DOCUMENT
Filing date
11 Jul 2018
Reporting date
10 Jul 2018
Next action
Verify source filing
4
File 001-38140
OWNERSHIP DOCUMENT
Filing date
19 Jun 2018
Reporting date
19 Jun 2018
Next action
Verify source filing
4
File 001-38140
FORM 4
Filing date
22 May 2018
Reporting date
18 May 2018
Next action
Verify source filing
4
File 001-38140
OWNERSHIP DOCUMENT
Filing date
27 Mar 2018
Reporting date
23 Mar 2018
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
06 Mar 2018
Reporting date
02 Mar 2018
Next action
Verify source filing
4
File 001-38186
PRIMARY DOCUMENT
Filing date
22 Aug 2017
Reporting date
21 Aug 2017
Next action
Verify source filing
3
File 001-38186
PRIMARY DOCUMENT
Filing date
15 Aug 2017
Reporting date
15 Aug 2017
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
10 Aug 2017
Reporting date
08 Aug 2017
Next action
Verify source filing
4
File 001-38140
FORM 4
Filing date
08 Aug 2017
Reporting date
04 Aug 2017
Next action
Verify source filing
3
File 001-38140
PRIMARY DOCUMENT
Filing date
06 Jul 2017
Reporting date
29 Jun 2016
Next action
Verify source filing
4
File 001-37588
PRIMARY DOCUMENT
Filing date
06 Jul 2017
Reporting date
29 Jun 2017
Next action
Verify source filing
4
File 001-37588
PRIMARY DOCUMENT
Filing date
08 Feb 2017
Reporting date
07 Feb 2017
Next action
Verify source filing
4
File 001-37588
PRIMARY DOCUMENT
Filing date
17 Aug 2016
Reporting date
15 Aug 2016
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
10 Aug 2016
Reporting date
08 Aug 2016
Next action
Verify source filing
SC 13G
SCHEDULE 13G
Filing date
17 Feb 2016
Reporting date
Not listed
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
06 Jan 2016
Reporting date
04 Jan 2016
Next action
Verify source filing
4
File 001-36316
4
Filing date
05 Jan 2016
Reporting date
31 Dec 2015
Next action
Verify source filing
4
File 001-37588
PRIMARY DOCUMENT
Filing date
19 Oct 2015
Reporting date
16 Oct 2015
Next action
Verify source filing
4
File 001-37588
PRIMARY DOCUMENT
Filing date
15 Oct 2015
Reporting date
13 Oct 2015
Next action
Verify source filing
3
File 001-37588
PRIMARY DOCUMENT
Filing date
13 Oct 2015
Reporting date
13 Oct 2015
Next action
Verify source filing
4
File 001-36316
4
Filing date
20 Aug 2015
Reporting date
18 Aug 2015
Next action
Verify source filing
3
File 001-36316
3
Filing date
20 Aug 2015
Reporting date
13 Aug 2015
Next action
Verify source filing
4
File 001-35898
FORM 4
Filing date
10 Jul 2015
Reporting date
08 Jul 2015
Next action
Verify source filing
SC 13G/A
SC 13G/A filing
Filing date
10 Jul 2015
Reporting date
Not listed
Next action
Verify source filing
4
File 001-34506
FORM 4
Filing date
15 May 2015
Reporting date
14 May 2015
Next action
Verify source filing
4
File 001-35898
PRIMARY DOCUMENT
Filing date
24 Sep 2014
Reporting date
22 Sep 2014
Next action
Verify source filing
4
File 001-35898
PRIMARY DOCUMENT
Filing date
21 May 2014
Reporting date
20 May 2014
Next action
Verify source filing
SC 13G
SCHEDULE 13G
Filing date
22 Jan 2014
Reporting date
Not listed
Next action
Verify source filing
4
File 001-35898
PRIMARY DOCUMENT
Filing date
22 May 2013
Reporting date
21 May 2013
Next action
Verify source filing
4
File 001-35898
PRIMARY DOCUMENT
Filing date
14 May 2013
Reporting date
10 May 2013
Next action
Verify source filing
3/A
File 001-35898
PRIMARY DOCUMENT
Filing date
14 May 2013
Reporting date
09 May 2013
Next action
Verify source filing
3
File 001-35898
PRIMARY DOCUMENT
Filing date
09 May 2013
Reporting date
09 May 2013
Next action
Verify source filing
4
File 001-34506
FORM 4
Filing date
21 Nov 2012
Reporting date
21 Nov 2012
Next action
Verify source filing
4
File 001-34506
PRIMARY DOCUMENT
Filing date
11 Aug 2011
Reporting date
09 Aug 2011
Next action
Verify source filing
About this filer
Mark D. Ein files with the SEC under CIK 0001246840. This page aggregates EDGAR filings and related ownership activity.
FAQ
What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.
CIK / security context first
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