KKR NGT (Dream) Blocker Parent L.P. - 01 Apr 2026 Form 4 Insider Report for OneStream, Inc. (OS)

Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
07 Apr 2026, 21:36:09 UTC
Prior SEC filing
29 Nov 2024
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
See Exhibit 99.1

Key filing fact

KKR NGT (Dream) Blocker Parent L.P. filed Form 4 for OneStream, Inc. (OS) on 07 Apr 2026.

Key facts

  • This page summarizes KKR NGT (Dream) Blocker Parent L.P.'s Form 4 filing for OneStream, Inc. (OS).
  • 11 reported transactions and 44 derivative rows are listed below.
  • Accepted by SEC: 07 Apr 2026, 21:36.

Change

  • Previous filing in this sequence was filed on 29 Nov 2024.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (4)

CIK 0002031189 Primary reporting owner

KKR NGT (Dream) Blocker Parent L.P.

Relationship
10%+ Owner
Address
30 HUDSON YARDS, NEW YORK
Signature
See Exhibit 99.1
Signature date
07 Apr 2026
CIK 0002031208

KKR NGT (Dream) Blocker Parent (EEA) L.P.

Relationship
10%+ Owner
Address
30 HUDSON YARDS, NEW YORK
Signature
See Exhibit 99.1
Signature date
07 Apr 2026
CIK 0001855206

KKR Associates NGT L.P.

Relationship
10%+ Owner
Address
C/O KOHLBERG KRAVIS ROBERTS & CO. L.P., 30 HUDSON YARDS, NEW YORK
Signature
See Exhibit 99.1
Signature date
07 Apr 2026
CIK 0001855241

KKR Next Gen Tech Growth Ltd

Relationship
10%+ Owner
Address
C/O KOHLBERG KRAVIS ROBERTS & CO. L.P., 30 HUDSON YARDS, NEW YORK
Signature
See Exhibit 99.1
Signature date
07 Apr 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-26,227,899
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
26,227,899
Exercise price
Footnotes
F1, F2, F5, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-26,227,899
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
26,227,899
Exercise price
Footnotes
F1, F2, F5, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-26,227,899
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
26,227,899
Exercise price
Footnotes
F1, F2, F5, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-26,227,899
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
26,227,899
Exercise price
Footnotes
F1, F2, F5, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-3,261,412
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
3,261,412
Exercise price
Footnotes
F1, F2, F6, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-3,261,412
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
3,261,412
Exercise price
Footnotes
F1, F2, F6, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-3,261,412
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
3,261,412
Exercise price
Footnotes
F1, F2, F6, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-3,261,412
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
3,261,412
Exercise price
Footnotes
F1, F2, F6, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-86,801
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
86,801
Exercise price
Footnotes
F1, F2, F7, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-86,801
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
86,801
Exercise price
Footnotes
F1, F2, F7, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-86,801
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
86,801
Exercise price
Footnotes
F1, F2, F7, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-86,801
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
86,801
Exercise price
Footnotes
F1, F2, F7, F8, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-2,197,087
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
2,197,087
Exercise price
Footnotes
F1, F2, F9, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-2,197,087
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
2,197,087
Exercise price
Footnotes
F1, F2, F9, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-2,197,087
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
2,197,087
Exercise price
Footnotes
F1, F2, F9, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-2,197,087
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
2,197,087
Exercise price
Footnotes
F1, F2, F9, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,560,909
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,560,909
Exercise price
Footnotes
F1, F2, F10, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,560,909
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,560,909
Exercise price
Footnotes
F1, F2, F10, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,560,909
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,560,909
Exercise price
Footnotes
F1, F2, F10, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,560,909
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,560,909
Exercise price
Footnotes
F1, F2, F10, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-757,590
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
757,590
Exercise price
Footnotes
F1, F2, F11, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-757,590
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
757,590
Exercise price
Footnotes
F1, F2, F11, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-757,590
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
757,590
Exercise price
Footnotes
F1, F2, F11, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-757,590
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
757,590
Exercise price
Footnotes
F1, F2, F11, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-5,303,124
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
5,303,124
Exercise price
Footnotes
F1, F2, F12, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-5,303,124
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
5,303,124
Exercise price
Footnotes
F1, F2, F12, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-5,303,124
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
5,303,124
Exercise price
Footnotes
F1, F2, F12, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-5,303,124
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
5,303,124
Exercise price
Footnotes
F1, F2, F12, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-7,125,659
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
7,125,659
Exercise price
Footnotes
F1, F2, F13, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-7,125,659
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
7,125,659
Exercise price
Footnotes
F1, F2, F13, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-7,125,659
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
7,125,659
Exercise price
Footnotes
F1, F2, F13, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-7,125,659
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
7,125,659
Exercise price
Footnotes
F1, F2, F13, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,067,910
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,067,910
Exercise price
Footnotes
F1, F2, F14, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,067,910
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,067,910
Exercise price
Footnotes
F1, F2, F14, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,067,910
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,067,910
Exercise price
Footnotes
F1, F2, F14, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,067,910
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,067,910
Exercise price
Footnotes
F1, F2, F14, F15, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,136,425
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,136,425
Exercise price
Footnotes
F1, F2, F16, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,136,425
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,136,425
Exercise price
Footnotes
F1, F2, F16, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,136,425
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,136,425
Exercise price
Footnotes
F1, F2, F16, F17, F18
OS transaction Derivative

Class D Common Stock

Other

Transaction value
Shares
-1,136,425
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class A Common Stock
Underlying amount
1,136,425
Exercise price
Footnotes
F1, F2, F16, F17, F18
OS transaction Derivative

Common Units

Other

Transaction value
Shares
-45,795,416
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class D Common Stock
Underlying amount
45,795,416
Exercise price
Footnotes
F1, F3, F4, F8, F17, F18
OS transaction Derivative

Common Units

Other

Transaction value
Shares
-45,795,416
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class D Common Stock
Underlying amount
45,795,416
Exercise price
Footnotes
F1, F3, F4, F8, F17, F18
OS transaction Derivative

Common Units

Other

Transaction value
Shares
-45,795,416
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class D Common Stock
Underlying amount
45,795,416
Exercise price
Footnotes
F1, F3, F4, F8, F17, F18
OS transaction Derivative

Common Units

Other

Transaction value
Shares
-45,795,416
Change %
-100%
Price
Shares after
0
Date
01 Apr 2026
Ownership
See Footnotes
Underlying class
Class D Common Stock
Underlying amount
45,795,416
Exercise price
Footnotes
F1, F3, F4, F8, F17, F18
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

KKR NGT (Dream) Blocker Parent L.P. is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 18 footnotes

Footnote F1

Pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated January 6, 2026, by and among OneStream, Inc. ("Issuer"), OneStream Software LLC, a subsidiary of Issuer ("Company LLC"), Onward AcquireCo Inc. ("Parent"), Onward Merger Sub 2, LLC ( "Merger Sub I") and Onward Merger Sub, Inc. ("Merger Sub II"), on April 1, 2026, Merger Sub 1 merged with and into Company LLC (the "First Merger"), with Company LLC surviving the First Merger and becoming a subsidiary of Parent, and Merger Sub II merged with and into Issuer (the "Second Merger" and together with the First Merger, the "Mergers"), with Issuer surviving the Second Merger and becoming a subsidiary of Parent.

Footnote F2

Pursuant to the Merger Agreement, immediately before the effective time of the Mergers (the "Effective Time"), each share of Class D Common Stock of the Issuer was cancelled and converted into the right to receive $24.00 per share in cash (the "Per Share Price") without interest, less applicable withholding taxes.

Footnote F3

Common Units represented limited liability company units of Company LLC and an equal number of shares of Class C Common Stock of the Issuer. Common Units were redeemable by the holder at any time on or following the closing of the Issuer's initial public offering for shares of Class D Common Stock of the Issuer on a one-for-one basis, and a corresponding number of shares of Class C Common Stock would be forfeited in connection with the redemption. At the Effective Time, each Common Unit was cancelled and converted into the right to receive an amount in cash, without interest, equal to the Per Share Price. Each corresponding share of Class C Common Stock was cancelled and converted into the right to receive $0.0001 in cash, without interest.

Footnote F4

Represents securities held by KKR Dream Holdings LLC. KKR Dream Aggregator L.P. is the sole member of KKR Dream Holdings LLC. KKR Dream Aggregator GP LLC is the general partner of KKR Dream Aggregator L.P. KKR Americas Fund XII (Dream) L.P. is the sole member of KKR Dream Aggregator GP LLC.

Footnote F5

Represents securities held by KKR Americas XII (Dream) Blocker Parent L.P.

Footnote F6

Represents securities held by KKR Americas XII EEA (Dream) Blocker Parent L.P.

Footnote F7

Represents securities held by KKR Americas XII (Dream II) Blocker Parent L.P.

Footnote F8

KKR Associates Americas XII AIV L.P. is the general partner of each of KKR Americas Fund XII (Dream) L.P., KKR Americas XII (Dream) Blocker Parent L.P., KKR Americas XII EEA (Dream) Blocker Parent L.P., and KKR Americas XII (Dream II) Blocker Parent L.P. KKR Americas XII AIV GP LLC is the general partner of KKR Associates Americas XII AIV L.P.

Footnote F9

Represents securities held by KKR Wolverine I Ltd. KKR Financial Management LLC is the portfolio manager of KKR Wolverine I Ltd. Kohlberg Kravis Roberts & Co. L.P. is the sole member of KKR Financial Management LLC. KKR & Co. GP LLC is the general partner of Kohlberg Kravis Roberts & Co. L.P. KKR Holdco LLC is the sole member of KKR & Co. GP LLC.

Footnote F10

Represents securities held by KKR TFO Partners L.P. KKR Associates TFO L.P. is the general partner of KKR TFO Partners L.P. KKR TFO GP Limited is the general partner of KKR Associates TFO L.P.

Footnote F11

Represents securities held by KKR Custom Equity Opportunities Fund L.P. KKR Associates Custom Equity Opportunities L.P. is the general partner of KKR Custom Equity Opportunities Fund L.P. KKR Custom Equity Opportunities Limited is the general partner of KKR Associates Custom Equity Opportunities L.P.

Footnote F12

Represents securities held by KKR-Milton Strategic Partners L.P. KKR Associates Milton Strategic L.P. is the general partner of KKR-Milton Strategic Partners L.P. KKR Milton Strategic Limited is the general partner of KKR Associates Milton Strategic L.P.

Footnote F13

Represents securities held by KKR NGT (Dream) Blocker Parent L.P.

Footnote F14

Represents securities held by KKR NGT (Dream) Blocker Parent (EEA) L.P.

Footnote F15

KKR Associates NGT L.P. is the general partner of KKR NGT (Dream) Blocker Parent L.P. and KKR NGT (Dream) Blocker Parent (EEA) L.P. KKR Next Gen Tech Growth Limited is the general partner of KKR Associates NGT L.P.

Footnote F16

Represents securities held by K-PRIME AG Financing LP. K-PRIME Hedge-Finance GP Limited is the general partner of K-PRIME AG Financing LP. K-PRIME Aggregator L.P. is the sole shareholder of K-PRIME Hedge-Finance GP Limited. K-Series PE Holdings L.P. is the general partner of K-PRIME Aggregator L.P. K-Series PE GP LLC is the general partner of K-Series PE Holdings L.P. KKR Associates Group L.P. is the sole member of K-Series PE GP LLC. KKR Associates Group GP LLC is the general partner of KKR Associates Group L.P.

Footnote F17

KKR Group Partnership L.P. is the sole member of each of KKR Americas XII AIV GP LLC, KKR Holdco LLC, and KKR Associates Group GP LLC and sole shareholder of each of KKR TFO GP Limited, KKR Custom Equity Opportunities Limited, KKR Milton Strategic Limited and KKR Next Gen Tech Growth Limited. KKR Group Holdings Corp. is the general partner of KKR Group Partnership L.P. KKR Group Co. Inc. is the sole shareholder of KKR Group Holdings Corp. KKR & Co. Inc. is the sole shareholder of KKR Group Co. Inc. KKR Management LLP is the Series I preferred stockholder of KKR & Co. Inc. Messrs. Henry R. Kravis and George R. Roberts are the founding partners of KKR Management LLP.

Footnote F18

Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons were the beneficial owners of any securities reported herein.

SEC remarks

Because no more than 10 reporting persons can file any one Form 4 through the Securities and Exchange Commission's EDGAR system, certain affiliates of the Reporting Persons have filed a separate Form 4.

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