Companies: 10,795·Total market cap: $144.5T
ImmunoGen, Inc.

ImmunoGen, Inc.

IMGNNASDAQHealthcare
$31.24
+$0.01(+0.02%)
Market Cap$8.7B
P/E Ratio
52W High$31.25
52W Low$3.61
Overview

ImmunoGen, Inc. (IMGN) SEC Filings & 10-K Annual Reports

SEC EDGAR regulatory submissions (10-K, 10-Q, 8-K), latest forms, and full filing history — quick links to financials and earnings below.

SEC EDGAR · data.sec.gov · CIK 0000855654 · IMGN · NASDAQ · as of Jun 9, 2026

Filing snapshot

1,000+
Total Filings
15-12G
Latest Form
2024-02-22
Most Recent
1989
Filing Since

Source: SEC EDGAR (data.sec.gov) · CIK 0000855654 · Updated hourly · Not investment advice

Latest Annual Report

10-K · Annual ReportFY
Filed Date
2023-03-01
Fiscal Year End
Mar 1, 2023
Accession No.
0001558370-23-002558
Primary Document
imgn-20221231x10k.htm
Source: data.sec.gov · CIK 0000855654 · Accession 0001558370-23-002558

Latest Key Filings

10-QQuarterly Report
10-Q
2023-11-02
8-KCurrent Report
FORM 8-K
2024-02-12Material Event
Form 4Insider Activity
Ownership Change Disclosures

Executive & director trade disclosures. Full buy/sell sentiment analysis on the dedicated tab.

SEC Filing History

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15-12G15-12G
15-12G
2024-02-22
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SC 13G/ABeneficial Ownership Report (Amended)
SC 13G/A
2024-02-14
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SC 13G/ABeneficial Ownership Report (Amended)
SC 13G/A
2024-02-14
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SC 13G/ABeneficial Ownership Report (Amended)
SCHEDULE 13G/A
2024-02-13
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2024-02-12
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Showing 1–15 of 453 filingsForm 4 / 144 hidden· 1000 total in EDGAR

About SEC Filings & 10-K Annual Reports

Data source: SEC EDGAR (data.sec.gov)  |  Updated: Hourly  |  CIK: 0000855654  |  Exchange: NASDAQ · Healthcare

ImmunoGen, Inc. (NASDAQ: IMGN) has submitted 1,000+ documents to the U.S. Securities and Exchange Commission (SEC) since its IPO in 1989. As a Healthcare sector company with CIK 0000855654, all filings are publicly accessible via the EDGAR database at no cost.

The annual 10-K report is ImmunoGen, Inc.'s most comprehensive regulatory disclosure. The most recent ImmunoGen, Inc. 10-K was filed on 2023-03-01 for fiscal year ending 2023. Historical IMGN 10-K annual reports are available from 2013 through 2023.

Investors researching ImmunoGen, Inc. SEC filings can access 10-K annual reports, quarterly 10-Q reports, material event 8-K filings, and proxy statements directly from the links above. All documents are sourced from the official SEC EDGAR system.

Source: SEC EDGAR · data.sec.gov · SEC Form 10-K · SEC Form 10-Q · SEC Form 8-K2026-06-09

Frequently Asked Questions

IMGN SEC Filings · 8 questions

ImmunoGen, Inc. (IMGN) SEC filings are publicly available on this page and on the official SEC EDGAR database at sec.gov. You can browse all 1,000+ filings and access original documents at no cost. ImmunoGen, Inc.'s CIK is 0000855654.

IMGN SEC filingsImmunoGen, Inc. SEC documentsfind IMGN 10-K