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Insider activity · 24 months0 buys3 salesCumulative net flow
Total declarations
101
Companies
2
▲ Purchases (2 ops.)
€125k
▼ Sales (22 ops.)
€1.5M

Latest filing published 23 Jun 2026 for Park Ohio Holdings CORP, €32k.

Filing timeline

BuySale
John D. Grampa

Insider track record

Disclosed buys
2
Disclosed sells
22
Signal history

Closed purchases

Market purchases
2
Positive at T+90
100%
Median T+90
+22.7%

Based on 2 purchases whose 90-day window has closed (published at least 91 days ago), the same population our ranking model reads.

Purchases by company

Since each purchase

Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.

John D. Grampa: trading record in brief

This profile gathers the share dealings of John D. Grampa across 2 companies, led by MATERION Corp and Park Ohio Holdings Corp. In total, 101 filings cover trades dated from 2 May 2006 to 23 June 2026.

The open-market side counts 2 purchases for €125k alongside 22 sales for €1.5M. On balance, insiders were net sellers of €1.3M. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Other entries cover 30 share grants and 8 option exercises. Since January 2026: no purchases and 3 sales on the market.

On 23 June 2026 came the latest disclosure, an open-market sale for €32k in Park Ohio Holdings Corp. The last purchase on record was published on 19 March 2020, which is 2,425 days ago. Typically, a trade is published a median of 2 days after it takes place. For comparison, the SEC allows two business days to file a Form 4. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.

Companies and markets linked to John D. Grampa

Open company profiles for insider transactions, fundamentals and analyst consensus when available.

Declarations100 total
  • ▼
    DirectorExecutivesPark Ohio Holdings Corp
    36,300 USD13SEC
    1,000 shares@ US$36.3020.7% of flowCommon StockSEC:0001628280-26-044912:0
  • ▼
    DirectorExecutivesPark Ohio Holdings Corp
    36,250 USD13SEC
    1,000 shares@ US$36.2520.7% of flowCommon StockSEC:0001628280-26-044912:1
  • ▼
    DirectorExecutivesPark Ohio Holdings Corp
    102,953 USD17SEC
    2,844 shares@ US$36.2058.7% of flowCommon StockSEC:0001628280-26-044912:2
  • ◆
    DirectorExecutivesPark Ohio Holdings Corp
    0SEC
    4,844 shares0Common StockSEC:0000076282-25-000064:0
  • ◆
    DirectorExecutivesPark Ohio Holdings Corp
    0SEC
    4,350 shares0Common StockSEC:0000076282-24-000090:0
  • ▲
    DirectorExecutivesPark Ohio Holdings Corp
    66,350 USD29SEC
    5,000 shares@ US$13.2728.1% of flowCommon StockSEC:0000076282-20-000018:0
    Canonical exit: 16 Jun 2020 (T+90)
  • ▲
    DirectorExecutivesPark Ohio Holdings Corp
    71,180 USD0SEC
    2,000 shares@ US$35.59Common StockSEC:0000076282-15-000133:0
    Canonical exit: 15 Mar 2016 (T+90)
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    794 USD0SEC
    22 shares@ US$36.11Common StockSEC:0001104657-14-000174:0
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    60 USD0SEC
    1.68 shares@ US$35.78Common StockSEC:0001104657-14-000174:1
  • ◇
    Sr. VP Finance and CFOExecutivesMATERION Corp
    336,420 USD0SEC
    14,000 shares@ US$24.03Common StockSEC:0001104657-14-000165:0
  • ●
    Sr. VP Finance and CFOExecutivesMATERION Corp
    336,461 USD0SEC
    8,518 shares@ US$39.50Common StockSEC:0001104657-14-000165:1
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    69,007 USD0SEC
    1,747 shares@ US$39.50Common StockSEC:0001104657-14-000165:2
  • ▼
    Sr. VP Finance and CFOExecutivesMATERION Corp
    144,096 USD0SEC
    3,735 shares@ US$38.58Common StockSEC:0001104657-14-000165:3
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    792 USD0SEC
    24 shares@ US$32.98Common StockSEC:0001104657-14-000149:0
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    60 USD0SEC
    1.81 shares@ US$33.01Common StockSEC:0001104657-14-000149:1
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    825 USD0SEC
    24 shares@ US$34.38Common StockSEC:0001104657-14-000123:0
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    60 USD0SEC
    1.76 shares@ US$33.91Common StockSEC:0001104657-14-000123:1
  • ◇
    Sr. VP Finance and CFOExecutivesMATERION Corp
    50,034 USD0SEC
    2,830 shares@ US$17.68Common StockSEC:0001104657-14-000110:0
  • ▼
    Sr. VP Finance and CFOExecutivesMATERION Corp
    27,048 USD0SEC
    800 shares@ US$33.81Common StockSEC:0001104657-14-000110:1
  • ▼
    Sr. VP Finance and CFOExecutivesMATERION Corp
    70,624 USD0SEC
    2,030 shares@ US$34.79Common StockSEC:0001104657-14-000110:2
  • ◆
    Sr. VP Finance and CFOExecutivesMATERION Corp
    0SEC
    4,620 shares0Common StockSEC:0001104657-14-000108:0
  • ◇
    Sr. VP Finance and CFOExecutivesMATERION Corp
    132,600 USD0SEC
    7,500 shares@ US$17.68Common StockSEC:0001104657-14-000108:1
  • ▼
    Sr. VP Finance and CFOExecutivesMATERION Corp
    224,264 USD0SEC
    6,800 shares@ US$32.98Common StockSEC:0001104657-14-000108:2
  • ▼
    Sr. VP Finance and CFOExecutivesMATERION Corp
    23,317 USD0SEC
    700 shares@ US$33.31Common StockSEC:0001104657-14-000108:3
  • ◇
    Sr. VP Finance and CFOExecutivesMATERION Corp
    82,566 USD0SEC
    4,670 shares@ US$17.68Common StockSEC:0001104657-14-000108:4

25 of 100 declarations