GBM: what insiders have been doing
GBM belongs to the Technology sector. Filings by its managers are published through TWSE / TPEx (MOPS). The last twelve months, up to 8 November 2026, brought 4 filings signed by 3 insiders.
Not one of the filings records a straightforward purchase or sale on the market. Such operations are usually part of compensation schedules, which makes them a weaker signal than an open-market trade.
Insider buying of GBM has been absent for the past year. Publication is fast: at least half of the trades appear on TWSE / TPEx (MOPS) on the same day. Until a filing is published, the market cannot know about the trade.
For context, the typical company on the same exchange (median of 624 companies) published 2 filings over the same period, against 4 filings here.
For comparison within the same sector, see the insider buying recorded at Basler Aktiengesellschaft and Lime Technologies AB (publ). Every figure here comes from the filings published by TWSE / TPEx (MOPS) and describes the past, not future prices; it is not investment advice.
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
- 400,000 sharesShareTWSETWMOPS:6191:115/03/12:張永發:1a6hn0g
- 11,000 sharesShareTWSETWMOPS:6191:115/02/25:楊建輝:0fu636y
- 54,000 sharesShareTWSETWMOPS:6191:115/02/25:楊建輝:049qtf1
- 11,000 sharesShareTWSETWMOPS:6191:115/02/25:瀚宇博德股份有限公司法人代表人楊建輝之配偶:0p1fq9y
- 12,000 sharesShareTWSETWMOPS:6191:114/09/03:楊建輝:1so7kmp
- 221,000 sharesShareTWSETWMOPS:6191:114/09/03:楊建輝:0moq8d5
- 12,000 sharesShareTWSETWMOPS:6191:114/09/03:楊建輝之配偶:19h7nlk
- 17,000 sharesShareTWSETWMOPS:6191:113/05/30:楊建輝:1fh5d38
- 116,000 sharesShareTWSETWMOPS:6191:113/05/30:楊建輝:1bie60i
- 17,000 sharesShareTWSETWMOPS:6191:113/05/30:楊建輝之配偶:1vpbe7t
- 22,000 sharesShareTWSETWMOPS:6191:112/11/28:楊建輝:0ku9hth
- 52,000 sharesShareTWSETWMOPS:6191:112/11/28:楊建輝:0imi3wa
- 35,000 sharesShareTWSETWMOPS:6191:111/02/24:楊建輝:115c291
- 38,000 sharesShareTWSETWMOPS:6191:110/03/10:楊建輝:1kpsd8i
- 463,000 sharesShareTWSETWMOPS:6191:106/02/18:李國斌之配偶:0lpvpsu
- 750,000 sharesShareTWSETWMOPS:6191:105/12/08:李國斌之配偶:0oqnl0a
16 of 16 declarations
About GBM
精成科 is a company listed on the XTAI market, specializing in the technology sector.
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