# Western Asset High Income Opportunity Fund Inc.: filings HIO · NYSE · CIK 910068 · [Other](/sectors/other.md) · fiscal year ends Sep 30 Pages: [Overview](/companies/hio.md) · [Financials](/companies/hio/financials.md) · [Filings](/companies/hio/filings.md) · [Insiders](/companies/hio/insiders.md) ## Reports and events: 38 filings Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 56, 3 38, DEFA14A 33, SC 13G/A 29, NPORT-P 28, N-Q 21, N-CSRS 18, N-PX 18, DEF 14A 17, N-CSR 17, 8-K 13, NSAR-A 10, NSAR-B 9, N-CEN 8, SC 13D/A 7, SC 13G 6, EFFECT 4, N-14 8C/A 4, 425 2, 497 2, CORRESP 2, N-14 8C 2, POS EX 2, PREC14A 2, 424B3 1, 4/A 1, DEFC14A 1, N-2 1, N-2/A 1, NPORT-EX 1, NSAR-B/A 1, POS 8C 1, SC 13D 1, SC TO-C 1, SC TO-I 1, SC TO-I/A 1). | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-03-09 | 16:17 ET | [DEF 14A](/filings/0001193125-26-098548.md) | Proxy statement, period 2026-04-17 | 0001193125-26-098548 | | 2025-03-07 | 12:52 ET | [DEF 14A](/filings/0001193125-25-049437.md) | Proxy statement, period 2025-04-14 | 0001193125-25-049437 | | 2024-11-20 | 17:22 ET | [8-K](/filings/0001193125-24-262647.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001193125-24-262647 | | 2024-03-06 | 11:58 ET | [DEF 14A](/filings/0001193125-24-060382.md) | Proxy statement, period 2024-04-12 | 0001193125-24-060382 | | 2023-03-07 | 11:32 ET | [DEF 14A](/filings/0001193125-23-062663.md) | Proxy statement, period 2023-04-14 | 0001193125-23-062663 | | 2022-03-01 | 15:47 ET | [DEF 14A](/filings/0001193125-22-061233.md) | Proxy statement, period 2022-04-08 | 0001193125-22-061233 | | 2021-03-01 | 12:56 ET | [DEF 14A](/filings/0001193125-21-063005.md) | Proxy statement, period 2021-04-09 | 0001193125-21-063005 | | 2020-08-18 | 15:54 ET | [8-K](/filings/0001193125-20-223582.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001193125-20-223582 | | 2020-06-23 | 13:49 ET | [SC 13D/A](/filings/0000902664-20-002481.md) | Ownership report, active investor, amended | 0000902664-20-002481 | | 2020-04-06 | 13:26 ET | [SC 13D/A](/filings/0001062993-20-001653.md) | Ownership report, active investor, amended | 0001062993-20-001653 | | 2020-04-03 | 18:40 ET | [8-K](/filings/0001193125-20-096590.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001193125-20-096590 | | 2020-02-21 | 15:51 ET | [SC 13D/A](/filings/0001062993-20-001116.md) | Ownership report, active investor, amended | 0001062993-20-001116 | | 2020-02-19 | 10:25 ET | [SC 13D/A](/filings/0001062993-20-001072.md) | Ownership report, active investor, amended | 0001062993-20-001072 | | 2020-02-18 | 15:20 ET | [SC 13D/A](/filings/0001062993-20-001054.md) | Ownership report, active investor, amended | 0001062993-20-001054 | | 2020-01-29 | 17:53 ET | [DEF 14A](/filings/0001193125-20-017156.md) | Proxy statement, period 2020-03-20 | 0001193125-20-017156 | | 2019-11-04 | 16:54 ET | [8-K](/filings/0001193125-19-283474.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001193125-19-283474 | | 2019-09-11 | 16:50 ET | [SC 13D/A](/filings/0001214659-19-005826.md) | Ownership report, active investor, amended | 0001214659-19-005826 | | 2019-06-17 | 16:47 ET | [SC 13D/A](/filings/0001062993-19-002633.md) | Ownership report, active investor, amended | 0001062993-19-002633 | | 2019-03-14 | 15:26 ET | [SC 13D](/filings/0001062993-19-001281.md) | Ownership report, active investor | 0001062993-19-001281 | | 2019-01-15 | 11:46 ET | [DEF 14A](/filings/0001193125-19-009559.md) | Proxy statement, period 2019-02-22 | 0001193125-19-009559 | | 2019-01-02 | 16:22 ET | [8-K](/filings/0001193125-19-000642.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-19-000642 | | 2017-12-22 | 09:26 ET | [DEF 14A](/filings/0001193125-17-377221.md) | Proxy statement, period 2018-01-26 | 0001193125-17-377221 | | 2017-08-17 | 17:45 ET | [8-K](/filings/0001193125-17-259999.md) | 4.01 Change of auditor; 9.01 Financial statements and exhibits | 0001193125-17-259999 | | 2016-12-22 | 14:59 ET | [DEF 14A](/filings/0001193125-16-801805.md) | Proxy statement, period 2017-01-27 | 0001193125-16-801805 | | 2015-12-23 | 16:31 ET | [DEF 14A](/filings/0001193125-15-412894.md) | Proxy statement, period 2016-01-29 | 0001193125-15-412894 | | 2015-11-16 | 16:31 ET | [8-K](/filings/0001193125-15-378466.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-15-378466 | | 2015-07-22 | 13:50 ET | [8-K](/filings/0001193125-15-259622.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-15-259622 | | 2014-12-23 | 15:25 ET | [8-K](/filings/0001193125-14-452568.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-14-452568 | | 2014-12-23 | 11:48 ET | [DEF 14A](/filings/0001193125-14-452118.md) | Proxy statement, period 2015-01-30 | 0001193125-14-452118 | | 2014-05-29 | 15:44 ET | [8-K](/filings/0001193125-14-217107.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-14-217107 | | 2013-12-20 | 11:53 ET | [DEF 14A](/filings/0001193125-13-480414.md) | Proxy statement, period 2014-01-31 | 0001193125-13-480414 | | 2013-06-14 | 16:36 ET | [8-K](/filings/0001104659-13-049423.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001104659-13-049423 | | 2013-02-15 | 17:12 ET | [8-K](/filings/0001104659-13-011342.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-13-011342 | | 2013-01-28 | 16:00 ET | [8-K](/filings/0001104659-13-005107.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-13-005107 | | 2012-12-21 | 13:58 ET | [DEF 14A](/filings/0001104659-12-085841.md) | Proxy statement, period 2013-01-25 | 0001104659-12-085841 | | 2011-12-29 | 16:35 ET | [DEF 14A](/filings/0001104659-11-071652.md) | Proxy statement, period 2012-01-27 | 0001104659-11-071652 | | 2010-12-29 | 13:36 ET | [DEF 14A](/filings/0001104659-10-064603.md) | Proxy statement, period 2011-01-28 | 0001104659-10-064603 | | 2009-12-31 | 12:03 ET | [DEF 14A](/filings/0001104659-09-072091.md) | Proxy statement, period 2010-01-26 | 0001104659-09-072091 | Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:00 ET. No prices; not investment advice.