# BUKK · Bukaka Teknik Utama Tbk.

Canonical: https://tradeinc.app/en/stocks/BUKK
Generated: 2026-10-17T06:11:29.224Z

- Sector: Infrastruktur · Konstruksi Bangunan
- Close: 840 (2026-10-16)
- Market cap (IDR): 2218001510760
- Free float: 10.08%

## 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 |
|---|---|---|---|
| DRS. SUHAELI KALLA | Individual | 30.32% | 800489790 |
| SOLIHIN JUSUF KALLA | Individual | 29.91% | 789812604 |
| NADIA ACHMAD | Individual | 14.71% | 388475003 |
| LAILA ACHMAD | Individual | 14.56% | 384475003 |
| KOPERASI PURNA BAKTI ENERGI | Cooperatives | 4.43% | 116896974 |
| PT BUKAKA INVESTINDO | Venture Capital | 1.4% | 36901500 |

## 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 |
|---|---|
| Individual | 93.64% |
| Cooperatives | 4.48% |
| Venture Capital | 1.42% |
| Trustee Bank | 0.19% |
| Insurance | 0.12% |
| Investment Fund Selling Agent | 0.09% |
| Securities Company | 0.02% |
| Financial Institutional | 0.01% |
| Bank | 0.01% |
| Investment Advisors | 0.01% |
| Corporate | 0.01% |
| Investment Manager | 0.01% |
| Private Bank | 0% |
| Pension Funds | 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 |
|---|---|---|---|---|
| 2026-06-08 | NADIA ACHMAD | 7.03% → 14.71% | 86% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-08062026-6195-00.pdf-0.pdf#page=1) |
| 2026-06-08 | LAILA ACHMAD | 6.88% → 14.56% | 78% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-08062026-8612-00.pdf-0.pdf#page=1) |
| 2026-06-08 | IR ACHMAD KALLA | 15.37% → 0% | 74% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-08062026-9458-00.pdf-0.pdf#page=1) |
| 2026-05-29 | IR ACHMAD KALLA | 25.56% → 15.37% | 86% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-29052026-3362-00.pdf-0.pdf#page=1) |
| 2026-05-29 | NADIA ACHMAD | 1.93% → 7.03% | 86% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-29052026-9515-00.pdf-0.pdf#page=1) |
| 2026-05-29 | LAILA ACHMAD | 1.78% → 6.88% | 86% | [PDF, page 1](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-29052026-2749-00.pdf-0.pdf#page=1) |

## Recent IDX disclosures

- 2026-10-07 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202610/9e9a776fe4_89eb861265.pdf) (read 2026-10-07T10:10:38.000Z)
- 2026-09-17 — [Penjelasan atas Permintaan Penjelasan Bursa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/24440b5c02_325805b678.pdf) (read 2026-09-17T02:50:54.000Z)
- 2026-09-09 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202609/220aecd25a_0a75819632.pdf) (read 2026-09-09T06:40:09.000Z)
- 2026-08-10 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202608/2c01ab6428_e3edbc502f.pdf) (read 2026-08-10T04:40:17.000Z)
- 2026-07-09 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202607/6ca9e058f8_9f06a371c7.pdf) (read 2026-07-09T07:40:41.000Z)
- 2026-06-22 — [Ringkasan Risalah Rapat Umum Para Pemegang Saham Tahunan dan Luar Biasa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/68451ebd43_53c62c4a9b.pdf) (read 2026-06-22T03:40:10.000Z)
- 2026-06-22 — [Laporan Hasil Public Expose - Tahunan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/4b049e0034_881aff832b.pdf) (read 2026-06-22T04:00:10.000Z)
- 2026-06-15 — [Rencana Transaksi Perubahan Kegiatan Usaha (KOREKSI)](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/fe62c269ee_c3d198476b.pdf) (read 2026-06-15T09:50:10.000Z)
- 2026-06-12 — [Penjelasan atas Permintaan Penjelasan Bursa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/be8c5b898c_d9e710ca08.pdf) (read 2026-06-12T03:30:34.000Z)
- 2026-06-12 — [Penyampaian Materi Public Expose - Tahunan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/f36ed67a9a_7e3079467b.pdf) (read 2026-06-12T03:30:34.000Z)
- 2026-06-10 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/c425999fa2_b04769499c.pdf) (read 2026-06-10T01:50:27.000Z)
- 2026-06-08 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-08062026-8612-00.pdf-0.pdf) (read 2026-06-08T02:20:13.000Z)
- 2026-06-08 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-08062026-9458-00.pdf-0.pdf) (read 2026-06-08T02:20:13.000Z)
- 2026-06-08 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-08062026-6195-00.pdf-0.pdf) (read 2026-06-08T02:20:13.000Z)
- 2026-06-02 — [Rencana Penyelenggaraan Public Expose - Tahunan](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202606/fade3b52e0_bf07c7ff34.pdf) (read 2026-06-02T03:30:43.000Z)
- 2026-05-29 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-29052026-9515-00.pdf-0.pdf) (read 2026-05-29T03:00:52.000Z)
- 2026-05-29 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-29052026-3362-00.pdf-0.pdf) (read 2026-05-29T03:00:52.000Z)
- 2026-05-29 — [LAPORAN KEPEMILIKAN ATAU SETIAP PERUBAHAN KEPEMILIKAN SAHAM PERUSAHAAN TERBUKA](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_KSEI/LK-29052026-2749-00.pdf-0.pdf) (read 2026-05-29T03:10:52.000Z)
- 2026-05-26 — [Pemanggilan Rapat Umum Pemegang Saham Tahunan dan Luar Biasa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202605/67c82a8516_fcc18ee370.pdf) (read 2026-05-26T02:00:50.000Z)
- 2026-05-12 — [Rencana Transaksi Perubahan Kegiatan Usaha (KOREKSI)](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202605/ad7008da16_d3bc682077.pdf) (read 2026-05-12T04:00:01.000Z)
- 2026-05-12 — [Penyampaian Bukti Iklan Pemberitahuan RUPS](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202605/532de1d615_6295df88e1.pdf) (read 2026-05-12T04:00:01.000Z)
- 2026-05-11 — [Pemberitahuan Rencana Rapat Umum Pemegang Saham Tahunan dan Luar Biasa](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202605/ae474e5f54_9a48419c85.pdf) (read 2026-05-11T01:30:02.000Z)
- 2026-05-11 — [Rencana Transaksi Perubahan Kegiatan Usaha](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202605/a5c2610cbb_a77b40cccb.pdf) (read 2026-05-11T09:59:52.000Z)
- 2026-05-08 — [Laporan Bulanan Registrasi Pemegang Efek](https://www.idx.id/StaticData/NewsAndAnnouncement/ANNOUNCEMENTSTOCK/From_EREP/202605/c25bed1b00_3e7870493e.pdf) (read 2026-05-08T01:45:00.000Z)

## 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.