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Who

John D. Grampa

Director

Company insider

Files Form 4 as: Director, Park-Ohio Holdings; Sr. VP Finance and CFO, Materion.

In numbers

Trades disclosed
191
Buys
2
Sells
9
Bought
$138K
Sold
$2.1M
Companies
2
Companies where not an officer
1
First trade
2 May 2006
Last trade
14 Aug 2026
Last filed
17 Aug 2026

Companies traded

Where they are an officer
MTRN MaterionOfficer · Machinery · last 20 Nov 20140 buys · 8 sells
Everywhere else they filed: board seats, 10% stakes, other companies
PKOH Park-Ohio HoldingsDirector · Machinery · last 14 Aug 20262 buys · 1 sell

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
14 Aug 2026filed 17 Aug 2026PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—93 at $0.00filing
14 Aug 2026filed 17 Aug 2026PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—93 at $0.00filing
23 Jun 2026filed 23 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Sold$36K1,000 at $36.30filing
23 Jun 2026filed 23 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Sold$36K1,000 at $36.25filing
23 Jun 2026filed 23 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Sold$103K2,844 at $36.20filing
23 Jun 2026filed 23 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Sold$36K1,000 at $36.30filing
23 Jun 2026filed 23 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Sold$36K1,000 at $36.25filing
23 Jun 2026filed 23 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Sold$103K2,844 at $36.20filing
29 May 2026filed 1 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Code A—3,072 at $0.00filing
29 May 2026filed 1 Jun 2026PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Code A—3,072 at $0.00filing
15 May 2026filed 18 May 2026PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—149 at $0.00filing
15 May 2026filed 18 May 2026PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—149 at $0.00filing
20 Feb 2026filed 23 Feb 2026PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—168 at $0.00filing
20 Feb 2026filed 23 Feb 2026PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—168 at $0.00filing
28 Nov 2025filed 1 Dec 2025PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—212 at $0.00filing
15 Aug 2025filed 18 Aug 2025PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—232 at $0.00filing
16 Jun 2025filed 17 Jun 2025PKOH Park-Ohio HoldingsMachinerySEC FORM 4 Code A—4,844 at $0.00filing
16 May 2025filed 19 May 2025PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—227 at $0.00filing
21 Feb 2025filed 24 Feb 2025PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—187 at $0.00filing
29 Nov 2024filed 2 Dec 2024PKOH Park-Ohio Holdingsoption or derivative · MachinerySEC FORM 4 Code A—138 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Industrials11

Buys in green, sells in red, by the company’s sector.

Related people

Patrick M. PrevostDirector · Director at Materion, filing Form 4 there in the last year
Craig S. ShularDirector · Director at Materion, filing Form 4 there in the last year
Melissa A. FashinpaurChief Accounting Officer · Chief Accounting Officer at Materion, filing Form 4 there in the last year
Robert J. PhillippyDirector · Director at Materion, filing Form 4 there in the last year
Emily M. LiggettDirector · Director at Materion, filing Form 4 there in the last year
Robert D. VilsackSecretary & CLO · Also traded PKOH in the last 90 days
James W. WertDirector · Also traded PKOH in the last 90 days
Vinod M. KhilnaniDirector · Also traded MTRN in the last 90 days