MNTR Mentor Corporation

NSD
$0.03

Mentor Corporation (MNTR) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal Bullish Insiders bought more than they sold over this window — uncommon at any size.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 0 sellers in the last 90 days
Insiders buying
1
17 transactions
Insiders selling
0
0 transactions
Purchases
$1.4K
18,950 shares
Sales
$0
0 shares
Net activity
$1.4K
purchases less sales

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: April 14, 2026 , by Billingsley Chester .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Billingsley Chester Chief Executive Officer Buy 1,125 $0.05 $61 9,113,403
Billingsley Chester Chief Executive Officer Buy 875 $0.06 $48 9,112,278
Billingsley Chester Chief Executive Officer Buy 950 $0.06 $57 9,111,403
Billingsley Chester Chief Executive Officer Buy 1,050 $0.06 $65 9,110,453
Billingsley Chester Chief Executive Officer Buy 2,000 $0.06 $124 9,109,403
Billingsley Chester Chief Executive Officer Buy 897 $0.06 $57 9,107,403
Billingsley Chester Chief Executive Officer Buy 3 $0.07 $0 3,200,399
Billingsley Chester Chief Executive Officer Buy 1,100 $0.08 $88 3,200,396
Billingsley Chester Chief Executive Officer Buy 3,000 $0.07 $210 3,199,296
Billingsley Chester Chief Executive Officer Buy 1,000 $0.08 $80 3,196,296
Billingsley Chester Chief Executive Officer Buy 1,300 $0.08 $101 3,195,296
Billingsley Chester Chief Executive Officer Buy 700 $0.08 $59 3,193,996
Billingsley Chester Chief Executive Officer Buy 900 $0.08 $75 3,193,296
Billingsley Chester Chief Executive Officer Buy 100 $0.08 $8 3,192,396
Billingsley Chester Chief Executive Officer Buy 1,000 $0.08 $83 3,192,296
Billingsley Chester Chief Executive Officer Buy 2,450 $0.08 $205 3,191,296
Billingsley Chester Chief Executive Officer Buy 500 $0.08 $40 3,188,846

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.