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eFFECTOR Therapeutics (EFTR) 10K Form and Latest SEC Filings 2026

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As of 09/2/2026 01:36 PM Eastern

Latest eFFECTOR Therapeutics SEC Filings & Recent Activity

eFFECTOR Therapeutics (NASDAQ:EFTR) has submitted 232+ documents to the U.S. Securities and Exchange Commission (SEC) since 2020. For investors, these filings are the primary source of verified financial data — covering everything from annual revenue and debt levels in the 10-K, to material business events in 8-K current reports, to insider buying and selling activity in Form 4 disclosures. The most recent filing was a Form EFFECT submitted on August 1, 2024.

DateFilerForm TypeView
08/01/2024 11:15 PM
eFFECTOR Therapeutics (1828522) Filer
Form EFFECT
08/01/2024 11:15 PM
eFFECTOR Therapeutics (1828522) Filer
Form EFFECT
08/01/2024 11:15 PM
eFFECTOR Therapeutics (1828522) Filer
Form EFFECT
08/01/2024 11:15 PM
eFFECTOR Therapeutics (1828522) Filer
Form EFFECT
07/19/2024 8:22 AM
eFFECTOR Therapeutics (1828522) Subject
Nasdaq Stock Market LLC (1354457) Filed by
Form 25-NSE
06/25/2024 7:30 PM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/25/2024 4:16 PM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/24/2024 6:06 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
06/13/2024 5:45 PM
eFFECTOR Therapeutics (1828522) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2024 5:45 PM
eFFECTOR Therapeutics (1828522) Issuer
Loewy Caroline M (1367451) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2024 5:23 PM
eFFECTOR Therapeutics (1828522) Issuer
Harrington-Smith Kristen (1894310) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2024 5:25 PM
eFFECTOR Therapeutics (1828522) Issuer
Ehrlich Christopher B (1293973) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2024 5:35 PM
eFFECTOR Therapeutics (1828522) Issuer
Klencke Barbara (1647647) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2024 5:15 PM
Bhatt Elizabeth (1748622) Reporting
eFFECTOR Therapeutics (1828522) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
06/13/2024 5:19 PM
eFFECTOR Therapeutics (1828522) Issuer
Gallagher Brian M. Jr. (1709976) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/20/2024 7:36 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/09/2024 3:51 PM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
05/09/2024 3:06 PM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/09/2024 3:08 PM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/26/2024 5:05 AM
eFFECTOR Therapeutics (1828522) Filer
Form DEF 14A
04/26/2024 5:10 AM
eFFECTOR Therapeutics (1828522) Filer
Form DEFA14A
04/26/2024 5:14 AM
eFFECTOR Therapeutics (1828522) Filer
Form ARS
04/16/2024 7:00 AM
eFFECTOR Therapeutics (1828522) Filer
Form PRE 14A
04/04/2024 7:38 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/04/2024 7:40 AM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
04/04/2024 7:15 AM
eFFECTOR Therapeutics (1828522) Filer
Form 424B5
04/02/2024 11:15 PM
eFFECTOR Therapeutics (1828522) Filer
Form EFFECT
03/29/2024 1:51 PM
eFFECTOR Therapeutics (1828522) Filer
Form POS AM
03/28/2024 3:02 PM
eFFECTOR Therapeutics (1828522) Filer
Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans  
03/26/2024 7:57 AM
eFFECTOR Therapeutics (1828522) Filer
Form 10-K
Annual report pursuant to Section 13 or 15(d)  
03/25/2024 3:10 PM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
02/21/2024 4:39 PM
eFFECTOR Therapeutics (1828522) Issuer
Loewy Caroline M (1367451) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/21/2024 4:20 PM
eFFECTOR Therapeutics (1828522) Issuer
Harrington-Smith Kristen (1894310) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/21/2024 4:22 PM
eFFECTOR Therapeutics (1828522) Issuer
Klencke Barbara (1647647) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/21/2024 4:25 PM
eFFECTOR Therapeutics (1828522) Issuer
Ehrlich Christopher B (1293973) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/21/2024 4:27 PM
Bhatt Elizabeth (1748622) Reporting
eFFECTOR Therapeutics (1828522) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/14/2024 2:48 PM
eFFECTOR Therapeutics (1828522) Subject
PFIZER INC (78003) Filed by
Form SC 13G/A
02/14/2024 8:48 AM
eFFECTOR Therapeutics (1828522) Subject
SECTORAL ASSET MANAGEMENT INC (1274413) Filed by
Form SC 13G/A
02/09/2024 7:14 PM
eFFECTOR Therapeutics (1828522) Subject
SR ONE CAPITAL MANAGEMENT, LLC (1853723) Filed by
Form SC 13G/A
01/30/2024 7:31 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
01/10/2024 7:01 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
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01/10/2024 7:06 AM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
01/08/2024 7:19 AM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
01/08/2024 7:15 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/08/2023 7:23 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/08/2023 7:23 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
12/08/2023 7:31 AM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
12/08/2023 7:31 AM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
11/29/2023 4:07 PM
eFFECTOR Therapeutics (1828522) Issuer
George Simeon (1595117) Reporting
SR One Capital Fund I Aggregator LP (1848319) Reporting
SR ONE CAPITAL MANAGEMENT, LLC (1853723) Reporting
SR ONE CAPITAL PARTNERS I, LP (1853724) Reporting
SR One Co-Invest I Manager, LLC (1881204) Reporting
SR One Co-Invest I, LLC (1864915) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
11/28/2023 7:15 AM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/28/2023 7:18 AM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
11/22/2023 3:16 PM
COLUMN GROUP II, LP (1600420) Filed by
eFFECTOR Therapeutics (1828522) Subject
Form SC 13D/A
11/16/2023 4:30 PM
eFFECTOR Therapeutics (1828522) Issuer
WORLAND STEPHEN T (1283307) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
11/16/2023 4:26 PM
Byrnes Michael (1619893) Reporting
eFFECTOR Therapeutics (1828522) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
11/13/2023 3:33 PM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
11/13/2023 3:23 PM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
11/13/2023 3:25 PM
eFFECTOR Therapeutics (1828522) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
09/15/2023 3:05 PM
COLUMN GROUP II, LP (1600420) Filed by
eFFECTOR Therapeutics (1828522) Subject
Form SC 13D/A
09/11/2023 6:36 PM
eFFECTOR Therapeutics (1828522) Issuer
Loewy Caroline M (1367451) Reporting
Form 3
Initial statement of beneficial ownership of securities  
09/11/2023 6:38 PM
eFFECTOR Therapeutics (1828522) Issuer
Loewy Caroline M (1367451) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
09/11/2023 3:58 PM
eFFECTOR Therapeutics (1828522) Filer
Form 424B3
09/11/2023 3:51 PM
eFFECTOR Therapeutics (1828522) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
(Data available from 1/1/2016 forward)

eFFECTOR Therapeutics SEC Filings - Frequently Asked Questions

eFFECTOR Therapeutics (EFTR) has submitted 232+ filings to the SEC since 2020. You can browse the complete history or filter by form type using the tools above.

eFFECTOR Therapeutics's fiscal year ends on December 31. The company typically files its 10-K annual report by the end of February, covering the prior fiscal year's financial results.

The most recent filing was a Form EFFECT submitted on August 1, 2024. View the full filing using the link above.

SEC Filing Types: 10-K, 10-Q, 8-K and More

SEC filings are legally required disclosures that public companies submit to the U.S. Securities and Exchange Commission. Unlike press releases or earnings call transcripts, these documents are filed under legal obligation — meaning the financial data they contain is audited, standardized, and subject to penalties if materially false. For investors, that makes SEC filings the most reliable primary source available for evaluating a company's true financial position.

Yes. All SEC filings are publicly available through the SEC's EDGAR database and on financial research platforms like MarketBeat. Companies are required by law to make these disclosures accessible to all investors — meaning retail investors have access to the same source documents as institutional analysts.

A 10-K is an annual report containing audited financial statements and a full review of the company's business — it is the most comprehensive filing a company makes each year. A 10-Q is a shorter, unaudited quarterly update filed three times per year between annual reports. Investors typically use the 10-K for deep fundamental analysis and the 10-Q to track whether the company is on pace with its guidance mid-year.

The most important filing for fundamental investors. Filed once per year, the 10-K contains audited financial statements, revenue and earnings trends, debt obligations, risk factors, and management's own assessment of the business. Reading the risk factors section and comparing year-over-year financials can reveal issues that don't show up in analyst summaries.

An unaudited financial update filed three times per year (the 10-K covers Q4). Investors use 10-Qs to track whether guidance is on pace, monitor changes in cash flow or inventory, and catch any mid-year shifts in business conditions before they become headline news.

Filed within four business days of a material event — earnings releases, merger announcements, executive departures, or major asset sales. Because 8-Ks are filed before media coverage catches up, they are often the fastest way to get unfiltered information directly from the company on market-moving events.

Filed within two business days whenever an executive or director buys or sells company stock. Insider purchases — especially large or clustered buys — are often interpreted as a signal of management confidence. Insider selling is more ambiguous but worth monitoring for patterns, particularly around lock-up expirations or ahead of major announcements.


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SEC filings for NASDAQ:EFTR are sourced directly from the U.S. Securities and Exchange Commission (SEC), with the most recent filing dated 8/1/2024. New filings are added as they're published.
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