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

Deer IX & Co. L.P. SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001655219.

Entity Type

Company

Total Filings

Latest Filing

15 May 2026

Industry

n/a

Save this filer page for the next filing cycle

Keep this page in your research queue, then return to compare new filings with prior context.

Save and revisit

Save this filer page

Create a free account to keep this page in your watchlists. After verification, we will save it automatically and open your saved research list.

Create free account and save this filer Already have an account? Sign in and save it

Best next steps

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-NT filed on 15 May 2026 for CIK 0001655219.

View Source Filing

Business address: C/O Bessemer Venture Partners, 1865 Palmer Avenue, Suite 104, Larchmont, NY, 10538
State of incorporation: Cayman Islands
Fiscal year end: 31 December

Key facts

Deer IX & Co. L.P. is an SEC filer tracked under CIK 0001655219.
74 filings are listed on this profile.
Common form coverage includes 13F-NT, 4, N-PX and more.

Change

Latest filing: 13F-NT 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-NT filed on 15 May 2026 for CIK 0001655219.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 13F-NT can change the filing history, ownership context, or next research path for Deer IX & Co. L.P..

Latest source-backed update: 13F-NT 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-NT 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 Deer IX & Co. L.P.

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

Deer IX & Co. L.P. 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.

Open company facts Browse metric rankings

Company intelligence

Deer IX & Co. L.P.: filings, ownership, insiders

CIK 0001655219. Open the active data lane, then verify the SEC filing behind the row.

Create free account to watch this company Open ownership signals

Active modules

3/5

Available company intelligence paths on this page.

Filings

SEC submissions provide the evidence trail.

Ownership context

2/3

Insider, large-stake, and institutional ownership lanes.

Return loop

Watch

Return when a new SEC-backed change lands.

Research checks

Latest filing

13F-NT filed 15 May 2026

Ownership lanes

2/3 active

CIK

0001655219

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.

Open latest insider signals Open large-stake radar

SEC filings

Available

Latest company filings

Start with the filing timeline to verify the newest source document and report period.

Open filings table

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

Available

Large-stake holders

Review beneficial ownership filings for activist-style or passive large holder changes around this issuer.

Open 13D/G history

Form 13F

Available

Institutional holders

Compare manager filings and smart-money context when company-level ownership needs broader holders.

Open 13F holder context

SEC-verifiable company hub

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

Create free account to watch this company

Watchlist return triggers

Watch Deer IX & Co. L.P. 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

Deer IX & Co. L.P. has filed 74 SEC EDGAR filings since 16 Feb 2021. Common forms include 13F-NT, 4, N-PX, 4/A and more.

Deer IX & Co. L.P. SEC filings Deer IX & Co. L.P. 13F portfolio Deer IX & Co. L.P. 13D/G history

Latest Filings

Recent SEC filings for Deer IX & Co. L.P. with direct links to document and filing folders.

13F-NT File 028-20960

13F-NT filing

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

13F-NT File 028-20960

13F-NT filing

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

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40537

4

Filing date: 06 Oct 2025
Reporting date: 02 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

N-PX File 028-20960

N-PX filing

Filing date: 29 Aug 2025
Reporting date: 30 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

13F-NT File 028-20960

13F-NT filing

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

13F-NT File 028-20960

13F-NT filing

Filing date: 14 Feb 2025
Reporting date: 31 Dec 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

N-PX File 028-20960

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-NT File 028-20960

13F-NT filing

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

13F-NT File 028-20960

13F-NT filing

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

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 19 Dec 2023
Reporting date: 15 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 12 Dec 2023
Reporting date: 06 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40256

4

Filing date: 19 Sep 2023
Reporting date: 14 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 15 Sep 2023
Reporting date: 12 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40998

4

Filing date: 04 Aug 2023
Reporting date: 03 Aug 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40998

4

Filing date: 02 Aug 2023
Reporting date: 01 Aug 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40998

4

Filing date: 26 Jul 2023
Reporting date: 25 Jul 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40998

4

Filing date: 24 Jul 2023
Reporting date: 21 Jul 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 001-40998

4/A

Filing date: 20 Jul 2023
Reporting date: 17 Jul 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40998

4

Filing date: 20 Jul 2023
Reporting date: 19 Jul 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40998

4

Filing date: 18 Jul 2023
Reporting date: 17 Jul 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 20 Jun 2023
Reporting date: 15 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 20 Jun 2023
Reporting date: 15 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 13 Jun 2023
Reporting date: 09 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

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

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 25 May 2023
Reporting date: 23 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 22 May 2023
Reporting date: 18 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 15 May 2023
Reporting date: 11 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 28 Feb 2023
Reporting date: 24 Feb 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 27 Feb 2023
Reporting date: 23 Feb 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

Filing date: 14 Feb 2023
Reporting date: 31 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 16 Dec 2022
Reporting date: 14 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 15 Dec 2022
Reporting date: 13 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 15 Dec 2022
Reporting date: 13 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 05 Dec 2022
Reporting date: 01 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 25 Nov 2022
Reporting date: 22 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 22 Nov 2022
Reporting date: 18 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 21 Nov 2022
Reporting date: 17 Nov 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40537

FORM 4 SUBMISSION

Filing date: 19 Oct 2022
Reporting date: 17 Oct 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 16 Sep 2022
Reporting date: 14 Sep 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 19 Aug 2022
Reporting date: 17 Aug 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 19 May 2022
Reporting date: 17 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 19 May 2022
Reporting date: 17 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 23 Feb 2022
Reporting date: 18 Feb 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 23 Feb 2022
Reporting date: 18 Feb 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40998

FORM 4 SUBMISSION

Filing date: 17 Nov 2021
Reporting date: 15 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 16 Nov 2021
Reporting date: 12 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 16 Nov 2021
Reporting date: 12 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

3 File 001-40998

FORM 3 SUBMISSION

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

3 File 001-39757

FORM 3 SUBMISSION

Filing date: 12 Oct 2021
Reporting date: 29 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40819

FORM 4 SUBMISSION

Filing date: 27 Sep 2021
Reporting date: 24 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40819

FORM 3 SUBMISSION

Filing date: 21 Sep 2021
Reporting date: 21 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 13 Sep 2021
Reporting date: 10 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 23 Aug 2021
Reporting date: 19 Aug 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

4 File 001-40537

FORM 4 SUBMISSION

Filing date: 30 Jun 2021
Reporting date: 28 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40537

OWNERSHIP DOCUMENT

Filing date: 24 Jun 2021
Reporting date: 24 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40537

OWNERSHIP DOCUMENT

Filing date: 24 Jun 2021
Reporting date: 24 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 20 May 2021
Reporting date: 18 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

Filing date: 14 May 2021
Reporting date: 31 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-40256

FORM 4 SUBMISSION

Filing date: 30 Mar 2021
Reporting date: 26 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-40256

FORM 3 SUBMISSION

Filing date: 23 Mar 2021
Reporting date: 23 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

13F-NT File 028-20960

13F-NT filing

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

About this filer

Deer IX & Co. L.P. files with the SEC under CIK 0001655219. 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.