Filer Snapshot

Timothy A. Springer SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001055624.

Entity Type

Individual

Total Filings

114

Latest Filing

06 Jan 2026

Industry

n/a

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Go to latest filings table Open reporting owner context
Source: SEC Forms 3/4/5

4 filed on 06 Jan 2026 for CIK 0001055624.

View Source Filing
Business address
36 Woodman Road, Chestnut Hill, MA, 02467
Top holdings (ownership)
TECX and RNAC
Top holdings (Schedule 13D)
RNAC and TECX

Quick Takeaways

  • Timothy A. Springer is an SEC filer tracked under CIK 0001055624.
  • 114 filings are listed on this profile.
  • Common form coverage includes 4, SCHEDULE 13D/A, SC 13D/A and more.

What Changed

  • Latest filing: 4 filed on 06 Jan 2026.
  • Report period: 02 Jan 2026.

Why This Matters

  • 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.

Source Evidence

Source: SEC Forms 3/4/5

4 filed on 06 Jan 2026 for CIK 0001055624.

View Source Filing

Return Loop

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A newly filed 4 can change the filing history, ownership context, or next research path for Timothy A. Springer.

Latest source-backed update
4 filed 06 Jan 2026
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Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: 4 filed 06 Jan 2026.
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Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

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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.

Open ownership filings Browse recent public updates

Filer Overview

Timothy A. Springer has filed 114 SEC EDGAR filings since 13 Feb 1998. Common forms include 4, SCHEDULE 13D/A, SC 13D/A, SC 13D and more.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Timothy A. Springer with direct links to document and filing folders.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 FORM 4 06 Jan 2026 02 Jan 2026 001-37798
4 Open 4 document View SEC filing for 4 11 Jun 2025 09 Jun 2025 001-38537
4 Open 4 document View SEC filing for 4 11 Apr 2025 09 Apr 2025 001-38537
4 Open 4 document View SEC filing for 4 FORM 4 11 Apr 2025 09 Apr 2025 001-37798
4 Open 4 document View SEC filing for 4 09 Apr 2025 07 Apr 2025 001-38537
SCHEDULE 13D/A Open SCHEDULE 13D/A document View SEC filing for SCHEDULE 13D/A 07 Apr 2025
4 Open 4 document View SEC filing for 4 FORM 4 20 Mar 2025 18 Mar 2025 001-37798
SCHEDULE 13D/A Open SCHEDULE 13D/A document View SEC filing for SCHEDULE 13D/A 10 Feb 2025
4 Open 4 document View SEC filing for 4 07 Feb 2025 05 Feb 2025 001-38537
SCHEDULE 13D/A Open SCHEDULE 13D/A document View SEC filing for SCHEDULE 13D/A 15 Jan 2025
4 Open 4 document View SEC filing for 4 FORM 4 15 Jan 2025 13 Jan 2025 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 06 Jan 2025 02 Jan 2025 001-37798
SCHEDULE 13D/A Open SCHEDULE 13D/A document View SEC filing for SCHEDULE 13D/A 23 Dec 2024
4 Open 4 document View SEC filing for 4 FORM 4 23 Dec 2024 19 Dec 2024 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 17 TO SCHEDULE 13D 18 Nov 2024
4 Open 4 document View SEC filing for 4 FORM 4 18 Nov 2024 14 Nov 2024 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 2 TO SCHEDULE 13D 24 Oct 2024
4 Open 4 document View SEC filing for 4 24 Oct 2024 22 Oct 2024 001-38537
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 16 TO SCHEDULE 13D 04 Oct 2024
4 Open 4 document View SEC filing for 4 FORM 4 04 Oct 2024 02 Oct 2024 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 15 TO SCHEDULE 13D 27 Sep 2024
4 Open 4 document View SEC filing for 4 FORM 4 27 Sep 2024 25 Sep 2024 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 1 TO SCHEDULE 13D 26 Sep 2024
4 Open 4 document View SEC filing for 4 26 Sep 2024 24 Sep 2024 001-38537
4 Open 4 document View SEC filing for 4 20 Aug 2024 16 Aug 2024 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 14 Aug 2024 12 Aug 2024 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 14 TO SCHEDULE 13D 05 Jul 2024
4 Open 4 document View SEC filing for 4 FORM 4 05 Jul 2024 02 Jul 2024 001-37798
SC 13D Open SC 13D document View SEC filing for SC 13D SCHEDULE 13D 26 Jun 2024
4 Open 4 document View SEC filing for 4 24 Jun 2024 20 Jun 2024 001-38537
3 Open 3 document View SEC filing for 3 24 Jun 2024 20 Jun 2024 001-38537
4 Open 4 document View SEC filing for 4 05 Jun 2024 04 Jun 2024 001-38940
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 13 TO SCHEDULE 13D 12 Apr 2024
4 Open 4 document View SEC filing for 4 FORM 4 10 Apr 2024 08 Apr 2024 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 12 TO SCHEDULE 13D 28 Mar 2024
4 Open 4 document View SEC filing for 4 FORM 4 28 Mar 2024 17 Jan 2024 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 26 Mar 2024 26 Mar 2024 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 20 Mar 2024 18 Mar 2024 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 18 Mar 2024 14 Mar 2024 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2024 02 Jan 2024 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 11 TO SCHEDULE 13D 17 Nov 2023
4 Open 4 document View SEC filing for 4 FORM 4 15 Nov 2023 13 Nov 2023 001-37798
SC 13D Open SC 13D document View SEC filing for SC 13D SCHEDULE 13D 18 Oct 2023
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 10 TO SCHEDULE 13D 25 Sep 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Jun 2023 28 Jun 2023 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Jun 2023 01 Jun 2023 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 May 2023 03 May 2023 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 13 Feb 2023 13 Feb 2023 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 04 Jan 2023 02 Jan 2023 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 10 Jun 2022 08 Jun 2022 001-38940
4/A Open 4/A document View SEC filing for 4/A FORM 4/A SUBMISSION 29 Apr 2022 16 Jun 2021 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 13 Apr 2022 11 Apr 2022 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 05 Jan 2022 03 Jan 2022 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 9 TO SCHEDULE 13D 27 Dec 2021
4 Open 4 document View SEC filing for 4 FORM 4 17 Dec 2021 15 Dec 2021 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 8 TO SCHEDULE 13D 15 Dec 2021
4 Open 4 document View SEC filing for 4 FORM 4 13 Dec 2021 09 Dec 2021 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 20 Aug 2021 18 Aug 2021 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 17 Jun 2021 16 Jun 2021 001-38940
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 7 TO SCHEDULE 13D 27 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 May 2021 24 May 2021 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 26 May 2021 24 May 2021 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 25 May 2021 21 May 2021 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 25 May 2021 21 May 2021 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 01 Apr 2021 30 Mar 2021 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 08 Mar 2021 05 Mar 2021 001-38940
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 11 Feb 2021
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A AMENDMENT NO. 2 TO SCHEDULE 13G 09 Feb 2021
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 6 TO SCHEDULE 13D 23 Oct 2020
4 Open 4 document View SEC filing for 4 FORM 4 23 Oct 2020 21 Oct 2020 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 20 Oct 2020 16 Oct 2020 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A AMENDMENT NO. 5 TO SCHEDULE 13D 15 Oct 2020
4 Open 4 document View SEC filing for 4 FORM 4 14 Oct 2020 09 Oct 2020 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 08 Oct 2020 06 Oct 2020 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 23 Jun 2020 19 Jun 2020 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Jun 2020 18 Jun 2020 001-38940
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 14 Feb 2020
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 14 Feb 2020
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 02 Jan 2020
4 Open 4 document View SEC filing for 4 4 26 Dec 2019 23 Dec 2019 001-37798
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 17 Dec 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2019 12 Dec 2019 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Dec 2019 10 Dec 2019 001-38501
4 Open 4 document View SEC filing for 4 FORM 4 - 09 Dec 2019 05 Dec 2019 001-38940
4/A Open 4/A document View SEC filing for 4/A FORM 4/A SUBMISSION 16 Sep 2019 03 Sep 2019 001-38501
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 16 Sep 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2019 03 Sep 2019 001-37798
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2019 03 Sep 2019 001-38501
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 23 Aug 2019
4 Open 4 document View SEC filing for 4 4 21 Aug 2019 19 Aug 2019 001-38501
4 Open 4 document View SEC filing for 4 FORM 4 20 Aug 2019 20 Aug 2019 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 16 Aug 2019 14 Aug 2019 001-37798
4/A Open 4/A document View SEC filing for 4/A FORM 4/A 16 Aug 2019 10 Nov 2017 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 - 01 Jul 2019 01 Jul 2019 001-38940
3 Open 3 document View SEC filing for 3 FORM 3 - 26 Jun 2019 26 Jun 2019 001-38940
4 Open 4 document View SEC filing for 4 FORM 4 18 Jun 2019 14 Jun 2019 001-37798
4 Open 4 document View SEC filing for 4 FORM 4 29 Mar 2019 10 Nov 2017 001-37798
SC 13D Open SC 13D document View SEC filing for SC 13D SC 13D 27 Mar 2019
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 27 Mar 2019
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 14 Feb 2019
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 14 Feb 2019
4 Open 4 document View SEC filing for 4 4 26 Jun 2018 22 Jun 2018 001-38501
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Jun 2018 15 Jun 2018 001-37798
4 Open 4 document View SEC filing for 4 4 31 May 2018 29 May 2018 001-38501
3 Open 3 document View SEC filing for 3 3 23 May 2018 23 May 2018 001-38501
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Nov 2017 14 Nov 2017 001-37798
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Nov 2017 09 Nov 2017 001-37798
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Jun 2017 27 Jun 2017 001-37798
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Jun 2017 16 Jun 2017 001-37798
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jun 2017 01 Jun 2017 001-37798
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 19 May 2017 17 May 2017 001-37798
4 Open 4 document View SEC filing for 4 4 29 Jun 2016 27 Jun 2016 001-37798
3 Open 3 document View SEC filing for 3 3 21 Jun 2016 21 Jun 2016 001-37798

About this filer

Timothy A. Springer files with the SEC under CIK 0001055624. 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.
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