Filer Snapshot

Aaron Rosenberg

CIK 0002031182. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

9

Latest filing

15 Jun 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: Forms 3/4/5 owner position for ONC. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Largest parsed holding

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Populates from the latest parsed 13F information table.

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13D/G large stake

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No recent parsed 13D/G stake row for this CIK.

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Source: SEC Forms 3/4/5

4 filed on 15 Jun 2026 for CIK 0002031182.

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Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

Forms 3/4/5 positions$118.16M

Reporting-owner positions with enough filing detail to estimate value.

Forms 3/4/5 position value

3/4/5
$118.16M

Estimated from parsed Forms 3/4/5 when filings include enough share and price data.

Source: Forms 3/4/5Confidence: Estimated when price data is available

Largest linked holdings

Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.

ONC
How to read these SEC ownership signals
  • Read each filing family separately: Form 13F, Schedules 13D/G, and Forms 3/4/5 answer different SEC disclosure questions and should not be blended into one ownership total.
  • Use 13F values for visible U.S.-listed equity portfolios, 13D/G rows for large beneficial-owner stakes, and Forms 3/4/5 rows for reporting-owner positions and transactions.
  • Open the linked research path when you need the filing, CIK, issuer, CUSIP, date, or source trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
55 Cambridge Parkway, Suite 700 W, Cambridge, MA, 02142

Filer intelligence

What SEC filings say about Aaron Rosenberg

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 ONC worth $118.16M.

SEC source mix

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

XML parsed
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

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13D/G stakes No rows yet

Beneficial ownership and large-stake disclosures.

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Forms 3/4/5 1 rows

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

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Forms 3/4/5 insider context

ONC

11 Jun 2026 · Chief Financial Officer

$118.16M
Issuer page Owner page

Latest update

What changed recently for Aaron Rosenberg

Ownership report updated

Latest ownership report period: 11 Jun 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

15 Jun 2026

Page type

Ownership filings

Latest period

11 Jun 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 15 Jun 2026.

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SEC filing record

CIK 0002031182 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
9
First seen
24 Jul 2024
Latest filing
15 Jun 2026
Entity
Individual

Observed form types

4 144 3

CIK-linked evidence first

Aaron Rosenberg SEC filings Aaron Rosenberg owner filings Open SEC filing index

Latest Filings

Showing the latest 9 of 9 SEC filings for Aaron Rosenberg.

4 File 001-37686

FORM 4

Filing date
15 Jun 2026
Reporting date
11 Jun 2026
SEC evidence
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144

144 filing

Filing date
11 Jun 2026
Reporting date
Not listed
SEC evidence
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4 File 001-37686

FORM 4

Filing date
10 Mar 2026
Reporting date
06 Mar 2026
SEC evidence
Open document Open filing
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4 File 001-37686

FORM 4

Filing date
05 Aug 2025
Reporting date
01 Aug 2025
SEC evidence
Open document Open filing
Next action
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144

144 filing

Filing date
01 Aug 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
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4 File 001-37686

FORM 4

Filing date
12 Jun 2025
Reporting date
10 Jun 2025
SEC evidence
Open document Open filing
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4 File 001-37686

FORM 4

Filing date
07 Mar 2025
Reporting date
05 Mar 2025
SEC evidence
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4 File 001-37686

FORM 4

Filing date
13 Aug 2024
Reporting date
09 Aug 2024
SEC evidence
Open document Open filing
Next action
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3 File 001-37686

FORM 3

Filing date
24 Jul 2024
Reporting date
22 Jul 2024
SEC evidence
Open document Open filing
Next action
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