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.

Filer Snapshot

DF DENT & CO INC SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0000934999.

Entity Type

Company

Total Filings

174

Latest Filing

15 May 2026

Industry

n/a

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Start with the latest filings table, then open the strongest context page for this filer.

Use the filings table to verify the newest submission, form type, and report period.
Open the deeper context page only when this filer actually has insider or ownership signal.

Go to latest filings table Browse SEC filer directory

Source: SEC Form 13F

13F-HR filed on 15 May 2026 for CIK 0000934999.

View Source Filing

Business address: 400 East Pratt Street, 7 Th Floor, Baltimore, MD, 21202
Top securities (13F): GOOG, V, AMZN, HEIA, VMC, MA, TDG, WCN, ECL, MCO, ISRG, FAST, MSFT, TECH, MPWR, PRM, GWRE, CBRE, KNSL, and DHR
State of incorporation: MD
Fiscal year end: 31 December

Key facts

DF DENT & CO INC is an SEC filer tracked under CIK 0000934999.
174 filings are listed on this profile.
Common form coverage includes 13F-HR, N-PX, SCHEDULE 13G/A and more.

Change

Latest filing: 13F-HR filed on 15 May 2026.
Report period: 31 Mar 2026.

Research use

You can quote filing dates and form types directly from the SEC record on this page.
Use this profile before deeper ownership or insider analysis to confirm filing history context.

Evidence

Source: SEC Form 13F

13F-HR filed on 15 May 2026 for CIK 0000934999.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 13F-HR can change the filing history, ownership context, or next research path for DF DENT & CO INC.

Latest source-backed update: 13F-HR filed 15 May 2026
Why come back: Revisit after a new SEC filing appears to compare the updated record with prior filings.

Latest filing on record: 13F-HR filed 15 May 2026.
Save this filer if you want a stable place to return after the next filing cycle.
Open the latest filing table or ownership context to verify what changed.

Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

Jump to save and follow actions Open latest filings table

Latest update

What changed recently for DF DENT & CO INC

New filing available

Latest 13F period: Q1 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

15 May 2026

Page type

Filer profile

Latest period

Q1 2026

Institutional portfolio context was refreshed from a 13F filing filed on 15 May 2026.

Open filer profile Browse recent public updates

Benchmark Context

Benchmark context for this company

DF DENT & CO INC 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: Q1 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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Company intelligence

DF DENT & CO INC: filings, ownership, insiders

CIK 0000934999. Open the active data lane, then verify the SEC filing behind the row.

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Active modules

2/5

Available company intelligence paths on this page.

Filings

174

SEC submissions provide the evidence trail.

Ownership context

1/3

Insider, large-stake, and institutional ownership lanes.

Return loop

Watch

Return when a new SEC-backed change lands.

Research checks

Latest filing

13F-HR filed 15 May 2026

Ownership lanes

1/3 active

CIK

0000934999

Next review

watch new filing, insider, 13D/G, or 13F change

SEC-verifiable company research path

Keep the next click tied to one changing object: a CIK, filing, insider, Schedule 13D/G holder, Form 13F manager, or security.

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SEC filings

Available

Latest company filings

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Company facts

Explore

Financial context

Use XBRL facts when ownership activity needs revenue, earnings, debt, or cash-flow context.

Browse latest financial reports

Forms 3/4/5

Explore

Insider activity

Check whether directors, officers, or 10% owners are buying, selling, or filing fresh ownership changes.

Browse latest insider filings

Schedule 13D/G

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Large-stake holders

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Form 13F

Available

Institutional holders

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SEC-verifiable company hub

Filings first, then ownership signals, insider context, and fundamentals.

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Watchlist return triggers

Watch DF DENT & CO INC when any filing-backed ownership signal appears, then jump back into the exact SEC evidence path.

new company filing insider Form 4 13D/G holder change 13F holder update

Filer Overview

DF DENT & CO INC has filed 174 SEC EDGAR filings since 23 Apr 1999. Common forms include 13F-HR, N-PX, SCHEDULE 13G/A, SC 13G and more.

DF DENT & CO INC SEC filings DF DENT & CO INC 13F portfolio

Latest Filings

Recent SEC filings for DF DENT & CO INC with direct links to document and filing folders.

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2026
Reporting date: 31 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 17 Feb 2026
Reporting date: 31 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Nov 2025
Reporting date: 30 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

N-PX File 028-03691

N-PX filing

Filing date: 25 Aug 2025
Reporting date: 30 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Aug 2025
Reporting date: 30 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2025
Reporting date: 31 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 12 Feb 2025
Reporting date: 31 Dec 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Nov 2024
Reporting date: 30 Sep 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

N-PX File 028-03691

N-PX filing

Filing date: 30 Aug 2024
Reporting date: 30 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Aug 2024
Reporting date: 30 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date: 06 Aug 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2024
Reporting date: 31 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

SC 13G filing

Filing date: 21 Mar 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Feb 2024
Reporting date: 31 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

DF DENT 13G AMENDMENT

Filing date: 09 Jan 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Nov 2023
Reporting date: 30 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Aug 2023
Reporting date: 30 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

DFDENTUTZ

Filing date: 11 Aug 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

SC 13G filing

Filing date: 15 Jun 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2023
Reporting date: 31 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Feb 2023
Reporting date: 31 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

GSHD 13G

Filing date: 30 Dec 2022
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Nov 2022
Reporting date: 30 Sep 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Aug 2022
Reporting date: 30 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 16 May 2022
Reporting date: 31 Mar 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Feb 2022
Reporting date: 31 Dec 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Nov 2021
Reporting date: 30 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 16 Aug 2021
Reporting date: 30 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 17 May 2021
Reporting date: 31 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 16 Feb 2021
Reporting date: 31 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

DF DENT AND COMPANY

Filing date: 15 Jan 2021
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 16 Nov 2020
Reporting date: 30 Sep 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Aug 2020
Reporting date: 30 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

DF DENT AND COMPANY BLACK LINE 13G

Filing date: 02 Jul 2020
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2020
Reporting date: 31 Mar 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Feb 2020
Reporting date: 31 Dec 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Nov 2019
Reporting date: 30 Sep 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

DF DENT 13GA BRKS

Filing date: 08 Nov 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

BROOKSAUTOMATION

Filing date: 23 Sep 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Aug 2019
Reporting date: 30 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2019
Reporting date: 31 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 Feb 2019
Reporting date: 31 Dec 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

AMENDED

Filing date: 11 Jan 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

BL

Filing date: 11 Jan 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Nov 2018
Reporting date: 30 Sep 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Aug 2018
Reporting date: 30 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2018
Reporting date: 31 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

WAGE13G

Filing date: 10 May 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Feb 2018
Reporting date: 31 Dec 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

WAGE 13G

Filing date: 08 Jan 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Nov 2017
Reporting date: 30 Sep 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Aug 2017
Reporting date: 30 Jun 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 May 2017
Reporting date: 31 Mar 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Feb 2017
Reporting date: 31 Dec 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 15 Nov 2016
Reporting date: 30 Sep 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

WAGE UNDER 5% FILING

Filing date: 16 Sep 2016
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

PROS 13G

Filing date: 02 Sep 2016
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

ENVESTNET 13G

Filing date: 02 Sep 2016
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 12 Aug 2016
Reporting date: 30 Jun 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-89494

EXAM

Filing date: 16 May 2016
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 16 May 2016
Reporting date: 31 Mar 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 12 Feb 2016
Reporting date: 31 Dec 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

13G ENV

Filing date: 20 Nov 2015
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 19 Nov 2015
Reporting date: 30 Sep 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

13G UPDATED FILING

Filing date: 16 Nov 2015
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

EXAM 13G

Filing date: 02 Oct 2015
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 13 Aug 2015
Reporting date: 30 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 14 May 2015
Reporting date: 31 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

SC 13G/A filing

Filing date: 12 Feb 2015
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

SC 13G/A filing

Filing date: 12 Feb 2015
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

SC 13G/A filing

Filing date: 12 Feb 2015
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 12 Feb 2015
Reporting date: 31 Dec 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 13 Nov 2014
Reporting date: 30 Sep 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

13G TNGO

Filing date: 03 Nov 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 08 Jul 2014
Reporting date: 30 Jun 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 16 Apr 2014
Reporting date: 31 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

EXAMWORKS 13G

Filing date: 14 Feb 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 10 Feb 2014
Reporting date: 31 Dec 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

13G/A WAGE

Filing date: 17 Jan 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 31 Oct 2013
Reporting date: 30 Sep 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

NAUH BELOW 5%

Filing date: 30 Oct 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

13F-HR filing

Filing date: 25 Jul 2013
Reporting date: 30 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

INNERWORKINGS

Filing date: 19 Jul 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

INNERWORKINGS INC

Filing date: 03 May 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

MARCH 2013

Filing date: 25 Apr 2013
Reporting date: 31 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

WAGEWORKS OVER 5

Filing date: 28 Mar 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

NAUH ANNUAL FILING 2012

Filing date: 22 Jan 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

DECEMBER 2012 13F

Filing date: 18 Jan 2013
Reporting date: 31 Dec 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

SEPTEMBER 2012 13 F REPORT

Filing date: 19 Oct 2012
Reporting date: 30 Sep 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

JUNE 2012 13F REPORT

Filing date: 18 Jul 2012
Reporting date: 30 Jun 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

DELERTRAK HOLDINGS BELOW 5

Filing date: 06 Jun 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

MARCH 2012 13F

Filing date: 25 Apr 2012
Reporting date: 31 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

DEALERTRACK HOLDINGS ANNUAL

Filing date: 22 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

NAUH ANNUAL REPORT

Filing date: 22 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

DECEMBER 2011 13F

Filing date: 06 Feb 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

BEACON ROOFING SUPPLY UNDER 5

Filing date: 12 Jan 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

TRAK101211

Filing date: 18 Oct 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

SEPT2011

Filing date: 17 Oct 2011
Reporting date: 30 Sep 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

APEI UNDER 5

Filing date: 08 Aug 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

JUNE 2011 13F REPORT

Filing date: 08 Aug 2011
Reporting date: 30 Jun 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

AMERICAN PUBLIC EDUCATION ANNUAL FILING

Filing date: 21 Apr 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

TRAK13GAAPR11

Filing date: 21 Apr 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

MARCH 2011 13F REPORT

Filing date: 21 Apr 2011
Reporting date: 31 Mar 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

SC 13G filing

Filing date: 01 Apr 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

SC 13G filing

Filing date: 01 Apr 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

SC 13G filing

Filing date: 01 Apr 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

DECEMBER 2010 13F REPORT

Filing date: 26 Jan 2011
Reporting date: 31 Dec 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

NAUH INITIAL 13G FILING

Filing date: 26 Jan 2011
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

SEPTEMBER 2010 13F REPORT

Filing date: 18 Oct 2010
Reporting date: 30 Sep 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

APEI INITIAL FILING

Filing date: 16 Aug 2010
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

JUNE 2010 13F REPORT

Filing date: 27 Jul 2010
Reporting date: 30 Jun 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

MARCH 2010 13F REPORT

Filing date: 16 Apr 2010
Reporting date: 31 Mar 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

KTII UNDER 5%; FINAL

Filing date: 05 Mar 2010
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

KTII ANNUAL FILING FOR 2009

Filing date: 19 Feb 2010
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-HR File 028-03691

DECEMBER 2009 13F REPORT

Filing date: 26 Jan 2010
Reporting date: 31 Dec 2009
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

DF DENT & CO INC files with the SEC under CIK 0000934999. 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.