BHP Group Ltd (ASX: BHP) shares have had an interesting week.

Investors initially punished this ASX 200 mining share when it delivered its latest earnings on Tuesday, February 18.

As we covered at the time, although these earnings came in ahead of expectations, there were still some painful metrics to digest. For the six months to 31 December, BHP reported an 8% drop in revenues to US$25.2 billion and an 11% fall in underlying earnings before interest, tax, depreciation, and amortisation (EBITDA) to US$12.4 billion.

This prompted BHP to slash its interim dividend by 30.5% to 50 US cents per share.

On the day these earnings were announced, BHP shares tanked by 2.03%. Today, though, the miner's shares have clawed back some ground and remain down 0.98% compared to before these earnings were made public.

BHP is now sitting on a year-to-date gain of 1.8% for 2025 so far. That's despite today's 1.4% loss (at the time of writing). The 'Big Australian' is also nursing a 7.45% loss over the past 12 months.

But more than one BHP insider seems to think the current BHP share price represents a big buying opportunity.

BHP insiders snap up shares

According to three separate ASX filings, no fewer than three BHP insiders have been buying up shares following the miner's earnings announcement.

First up is BHP director and board member Christine O'Reilly. On 19 February, O'Reilly indirectly bought 1,200 BHP shares through a superannuation fund for $41.03 per share, for a total purchase value of $29,236. This purchase, the first O'Reilly has made since 2021, brings her position up to 10,200 shares.

Next up we have BHP board member and director Dion Weisler. A filing shows that Weisler bought up 2,500 BHP shares for an average price of $40.48 on 19 February as well. That gives this buy a value of $101,197.75. As with O'Reilly, this was also an indirect purchase, made through a private investment entity.

This takes Weisler's total position in BHP to 10,044 shares.

Last, but certainly not least, we have BHP's new chair, Ross McEwan, to discuss. An ASX filing reveals that McEwan bought 25,000 BHP shares on 18 February for an average cost of $40.53 per share, or  $1,013,250 in total. Again, this was an indirect purchase.

It brings McEwan's total position in BHP up to 35,000 shares.

Foolish takeaway

It is significant that two of these BHP insiders have bought up shares for the first time since 2021. With the miner now around 20% cheaper than it was at its last all-time high of over $50 a share in late 2023, perhaps these management figures are seeing value.

But only time will tell whether these buys have been made at opportune levels.