Filer Snapshot

Timothy A. Springer

CIK 0001055624. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

21

Latest filing

07 Apr 2025

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13D/G stake for TECX. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Largest parsed holding

—

Populates from the latest parsed 13F information table.

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13D/G large stake

TECX

03 Apr 2025 · 32% ownership

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Source: SEC Schedule 13D/G

SCHEDULE 13D/A filed on 07 Apr 2025 for CIK 0001055624.

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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$179.67M

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

Forms 3/4/5 position value

3/4/5
$179.67M

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

Largest linked holdings

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

TECX RNAC

Largest active 13D stakes

Active large-stake positions disclosed in parsed Schedule 13D filings.

RNAC TECX
How to read these SEC ownership signals
  • Read each filing family separately: 13F portfolios, 13D/G large stakes, and Forms 3/4/5 owner positions answer different SEC disclosure questions.
  • Open the linked research path when you need the filing, CIK, issuer, or CUSIP trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
36 Woodman Road, Chestnut Hill, MA, 02467

Filer intelligence

What SEC filings say about Timothy A. Springer

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

  • 2 recent 13D/G stake rows found; top row is TECX at 32% ownership.
  • Forms 3/4/5 show insider context for TECX worth $98.26M.

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 2 rows

Beneficial ownership and large-stake disclosures.

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Forms 3/4/5 3 rows

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

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13D/G large-stake context

TECX

03 Apr 2025 · Common Stock, $0.0001 par value per share

32%
Issuer page 13D/G history

RNAC

13 Jan 2025 · Common Stock, $0.0001 par value per share

37%
Issuer page 13D/G history

Forms 3/4/5 insider context

TECX

09 Jun 2025 · 10% owner

$98.26M
Issuer page Owner page

RNAC

02 Jan 2026 · 10% owner

$81.41M
Issuer page Owner page

MORF

16 Aug 2024 · 10% owner

$0
Issuer page Owner page

Latest update

What changed recently for Timothy A. Springer

Ownership report updated

Latest ownership report period: 02 Jan 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

06 Jan 2026

Page type

Ownership filings

Latest period

02 Jan 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 06 Jan 2026.

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SEC filing record

CIK 0001055624 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
21
First seen
25 May 2021
Latest filing
07 Apr 2025
Entity
Individual

Observed form types

4 4/A SCHEDULE 13D/A

CIK-linked evidence first

Timothy A. Springer SEC filings Timothy A. Springer 13D/G history Timothy A. Springer owner filings Open SEC filing index

Latest Filings

Showing the latest 12 of 21 SEC filings for Timothy A. Springer.

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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
07 Apr 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
10 Feb 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
15 Jan 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
23 Dec 2024
Reporting date
Not listed
SEC evidence
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4

4 filing

Filing date
30 Jun 2023
Reporting date
28 Jun 2023
SEC evidence
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4

4 filing

Filing date
02 Jun 2023
Reporting date
01 Jun 2023
SEC evidence
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4

4 filing

Filing date
04 May 2023
Reporting date
03 May 2023
SEC evidence
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4

4 filing

Filing date
13 Feb 2023
Reporting date
13 Feb 2023
SEC evidence
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4

4 filing

Filing date
04 Jan 2023
Reporting date
02 Jan 2023
SEC evidence
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4

4 filing

Filing date
10 Jun 2022
Reporting date
08 Jun 2022
SEC evidence
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4/A

4/A filing

Filing date
29 Apr 2022
Reporting date
16 Jun 2021
SEC evidence
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4

4 filing

Filing date
13 Apr 2022
Reporting date
11 Apr 2022
SEC evidence
Open document Open filing
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