# MBSS · Mitrabahtera Segara Sejati Tbk.

Canonical: https://tradeinc.app/en/stocks/MBSS
Generated: 2026-10-17T07:36:34.052Z

- Sector: Energi · Minyak, Gas & Batu Bara
- Close: 3110 (2026-10-16)
- Market cap (IDR): 5442677714730
- Free float: 17.5%

## Current shareholders

As of 2026-09-30 · source: https://www.idx.co.id/Media/yqjhhsee/peng-2026-09-00024-satu-persen.xlsx

| Holder | Type | Stake | Shares |
|---|---|---|---|
| PT WIBOWO GROUP CAPITAL (Controller) | Corporate | 82.5% | 1443766800 |
| SUWANTARA GOTAMA | Individual | 2.41% | 42257800 |

## Ownership by holder type

As of 2026-08-31 · source: https://www.idx.co.id/Media/y0vjakdz/peng-2026-08-00021-klasifikasi.xlsx

| Type | Stake |
|---|---|
| Corporate | 88.82% |
| Individual | 9.11% |
| Firm | 1.49% |
| Mutual Funds | 0.16% |
| Partnership | 0.09% |
| Bank | 0.09% |
| Insurance | 0.07% |
| Investment Advisors | 0.07% |
| Securities Company | 0.05% |
| Pension Funds | 0.04% |
| Foundation | 0.01% |
| Sole Proprietorship | 0% |
| Capital Market Supporting Institutions And Professions | 0% |
| Private Bank | 0% |
| Investment Manager | 0% |
| Congregation | 0% |
| Brokerage Firms | 0% |

## Ownership changes

Changes reported in IDX ownership filings, including directors and major shareholders. Unchanged daily snapshots and extractions below 70% confidence are omitted.

| Filed | Holder | Stake | Extraction confidence | Source |
|---|---|---|---|---|
| 2026-10-15 | PT WIBOWO GROUP CAPITAL (Controller) | 82.5% → 90.09%; Shares: 1443766800 → 1576605000 | 100% | [Source file](https://www.idx.co.id/Media/s5ffiiw2/peng-2026-10-15-00096-lima-persen.xlsx) |
| 2026-10-15 | According to Article Article | 2% → —; Shares: 2 → 4 | 74% | [PDF, page 4](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-15102026-2631-00.pdf-0.pdf#page=4) |
| 2026-10-15 | Sesuai dengan Pasal Pasal | 2% → —; Shares: 2 → 4 | 74% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-15102026-2631-00.pdf-0.pdf#page=1) |
| 2026-08-04 | PT WIBOWO GROUP CAPITAL (Controller) | 0% → 82.5% | 74% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-04082026-8409-00.pdf-0.pdf#page=1) |
| 2026-08-03 | PT WIBOWO GROUP CAPITAL (Controller) | 0% → 82.5% | 86% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-03082026-1158-00.pdf-0.pdf#page=1) |
| 2026-08-03 | PT Wibowo Group Capital (Controller) | 0% → 82.5% | 78% | [PDF, page 3](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/2fe8edcbf0_a275c4dae3.pdf#page=3) |

## Recent IDX disclosures

- 2026-10-16 — [Laporan Hasil Penawaran Tender Wajib atas Saham PT Mitrabahtera Segara Sejati Tbk  (Perusahaan Sasaran) yang dilaksanakan oleh PT Wibowo Group Capital (Pengendali Baru)](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202610/a0bd53c914_b799af056d.pdf) (read 2026-10-16T11:20:00.000Z)
- 2026-10-15 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-15102026-2631-00.pdf-0.pdf) (read 2026-10-15T11:30:24.000Z)
- 2026-10-08 — [Laporan Bulanan Registrasi Pemegang Efek (KOREKSI)](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202610/c1c7843b1e_df166cce46.pdf) (read 2026-10-08T03:00:52.000Z)
- 2026-10-07 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202610/3c5ffb13e1_fc006c754d.pdf) (read 2026-10-07T08:40:38.000Z)
- 2026-10-06 — [Penjelasan atas Volatilitas Transaksi](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202610/4babf4d31e_153b3ca068.pdf) (read 2026-10-06T07:50:38.000Z)
- 2026-10-06 — [Perubahan Pengurus](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202610/6102bec10f_154bbe290a.pdf) (read 2026-10-06T10:20:38.000Z)
- 2026-09-30 — [Perubahan Komite Audit](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/33d0d7a3db_b2048e5d6c.pdf) (read 2026-09-30T15:10:42.000Z)
- 2026-09-30 — [Perubahan Komite Nominasi dan Remunerasi Emiten atau Perusahaan Publik](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/38c9608f58_96add9036d.pdf) (read 2026-09-30T15:20:42.000Z)
- 2026-09-18 — [Penyampaian Bukti Iklan Hasil RUPS](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/c51a50e6cf_b0bb634542.pdf) (read 2026-09-18T09:30:00.000Z)
- 2026-09-17 — [Perubahan Corporate Secretary](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/d1fb4f581c_507351354c.pdf) (read 2026-09-17T08:10:54.000Z)
- 2026-09-17 — [Perubahan Internal Audit](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/5153f22449_6ff3e87ca9.pdf) (read 2026-09-17T08:20:54.000Z)
- 2026-09-17 — [Perubahan Alamat/Nomor Telepon/Fax/E-Mail/Website/NPWP/NPKP](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/881904cb09_2271286bb7.pdf) (read 2026-09-17T12:10:54.000Z)
- 2026-09-17 — [Ringkasan Risalah Rapat Umum Para Pemegang Saham Luar Biasa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/32710626c8_e8411b7543.pdf) (read 2026-09-17T12:10:54.000Z)
- 2026-09-08 — [Keterbukaan Informasi Tentang Penawaran Tender Wajib](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/3dd7bd6169_715425c9d8.pdf) (read 2026-09-08T11:00:33.000Z)
- 2026-09-07 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/aa8aab9816_57e4c4d2fc.pdf) (read 2026-09-07T09:40:33.000Z)
- 2026-08-26 — [Pemanggilan Rapat Umum Pemegang Saham Luar Biasa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/7f3d446d91_752aeff95e.pdf) (read 2026-08-26T10:50:19.000Z)
- 2026-08-26 — [Penyampaian Bukti Iklan Panggilan RUPS](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/a75ef8bb4e_077c170fc7.pdf) (read 2026-08-26T11:50:19.000Z)
- 2026-08-26 — [Pemanggilan Rapat Umum Pemegang Saham Luar Biasa (KOREKSI)](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/1a9d6f1432_f2007b5c55.pdf) (read 2026-08-26T14:00:19.000Z)
- 2026-08-18 — [Penjelasan atas Permintaan Penjelasan Bursa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/0698c36867_0e1fdd3787.pdf) (read 2026-08-18T07:40:02.000Z)
- 2026-08-11 — [Pemberitahuan Rencana Rapat Umum Pemegang Saham Luar Biasa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/f809e2d047_ed4eb2837c.pdf) (read 2026-08-11T04:00:17.000Z)
- 2026-08-11 — [Pengunduran diri anggota Direksi dan Dewan Komisaris Perseroan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/870134544c_339a4392c3.pdf) (read 2026-08-11T05:50:41.000Z)
- 2026-08-11 — [Penyampaian Bukti Iklan Pemberitahuan RUPS](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/f1c528a461_d0a8082c85.pdf) (read 2026-08-11T13:00:41.000Z)
- 2026-08-06 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/6f79ae9575_d90b3f8850.pdf) (read 2026-08-06T04:50:09.000Z)
- 2026-08-04 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-04082026-8409-00.pdf-0.pdf) (read 2026-08-04T08:00:09.000Z)
- 2026-08-03 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-03082026-1158-00.pdf-0.pdf) (read 2026-08-03T08:10:09.000Z)
- 2026-08-03 — [Perubahan Struktur Pemegang Saham](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/2fe8edcbf0_a275c4dae3.pdf) (read 2026-08-03T09:00:09.000Z)
- 2026-07-31 — [Penyampaian Bukti Iklan Informasi Laporan Keuangan Interim](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202607/ed7e74dd11_e3ec1f1723.pdf) (read 2026-07-31T12:00:57.000Z)
- 2026-07-31 — [Penyampaian Laporan Keuangan Interim Yang Tidak Diaudit](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202607/20260731164136-63656-0/FinancialStatement-2026-II-MBSS.pdf) (read 2026-07-31T10:00:57.000Z)
- 2026-07-30 — [Penjelasan atas Permintaan Penjelasan Bursa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202607/84299b95e0_52dc53bc77.pdf) (read 2026-07-30T10:40:57.000Z)
- 2026-07-21 — [Penandatanganan Perjanjian Jual Beli Saham Bersyarat (CSPA)](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202607/a8411c51e1_226baa19b7.pdf) (read 2026-07-21T08:30:18.000Z)
- 2026-07-21 — [Penyampaian Informasi Pemenuhan Kewajiban Public Expose - Tahunan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202607/4c026e999b_45a3fa10a2.pdf) (read 2026-07-21T08:30:18.000Z)
- 2026-07-07 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202607/5685ea5635_11559b5955.pdf) (read 2026-07-07T09:00:28.000Z)
- 2026-06-24 — [Penyampaian Bukti Iklan Hasil RUPS](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/f9988ff3c2_fe6a18fc15.pdf) (read 2026-06-24T07:10:10.000Z)
- 2026-06-24 — [Laporan Hasil Public Expose - Tahunan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/437a7c9c12_5efd209c1d.pdf) (read 2026-06-24T05:00:10.000Z)
- 2026-06-24 — [Penyampaian Bukti Iklan Hasil RUPS (KOREKSI)](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/095c79ae98_4c1cd97d0a.pdf) (read 2026-06-24T07:10:10.000Z)
- 2026-06-24 — [Ringkasan Risalah Rapat Umum Para Pemegang Saham Tahunan dan Luar Biasa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/8cb578a6e9_0a41f84fed.pdf) (read 2026-06-24T06:40:10.000Z)
- 2026-06-18 — [Penyampaian Materi Public Expose - Tahunan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/dbed10dc5f_56538e36c0.pdf) (read 2026-06-18T05:50:48.000Z)
- 2026-06-08 — [Rencana Penyelenggaraan Public Expose - Tahunan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/264bf8ac93_a0278c5d15.pdf) (read 2026-06-08T02:20:13.000Z)
- 2026-06-08 — [Pengunduran diri anggota Dewan Komisaris Perseroan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/0b61e323bb_bf20ab31fd.pdf) (read 2026-06-08T02:20:13.000Z)
- 2026-06-05 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/728088fd01_67e43f1e4d.pdf) (read 2026-06-05T01:20:12.000Z)

## How this page is built

Sources: IDX disclosures and ownership filings, the issuer's shareholder register and monthly composition reports, and IDX end-of-day prices. Every row links to the document it came from.

Ownership figures are read from PDFs automatically. A filing whose extraction is pending or below 70% confidence is left out rather than shown as fact.

Not on this page: running trades, broker flow, orderbook depth and intraday prices. Those are in the signed-in terminal.

Research data, not investment advice.