$NPKI

$11.27 +$0.26 (2.36%) Close

$NPKI Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 84.9M shares outstanding

Who owns NPKI?

By type of holder

Institutions 91.7% Insiders 5.0% Everyone else 3.3%

Concentration Top 10 holders own 39.3%

BlackRock, Inc. 9.4% · Ameriprise Financial Inc 5.3%

Institutional ownership

91.7%

+2.2 pts vs last qtr

Institutional holders

253

+7 vs last qtr

Net shares bought

+1.9M

by institutions in Q2 2026

New / sold out

39 / 32

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Emerald Advisers, LLC NEW +1.6M
Massachusetts Financial Services Co /ma/ NEW +1.5M

Biggest sellers in Q2 2026

Ameriprise Financial Inc −1.1M
Prudential Financial Inc −570.3K

Who is planning to sell?

Notices of proposed sale, last 12 months

$5.57M

10 notices from 7 people

Shares covered

395.0K

0.47% of the company

Arranged in advance

100%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Matthew Lanigan Director 10b5-1 $2.44M
Gregg Piontek Officer 10b5-1 $2.38M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+2.4%

+0.27% a year

Each share's claim on the business

−2.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$114M vs $83.7M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years56% 3–5 years3% 1–3 years22% Under 1 year19%

Quarterly turnover

15.3%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting NPKI on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	7.9M	9.35%	+737.8K (+10.2%)	≤2021	0.0%
Shares held by quarter Peak holding7.9M (Q2'26) Change over 8 quarters+947.2K Share of the company9.350% BlackRock, Inc.'s full portfolio →
AF Ameriprise Financial Inc	4.5M	5.28%	−1.1M (−20.2%)	≤2021	0.0%
Shares held by quarter Peak holding7.7M (Q3'24) Change over 8 quarters−3.2M Share of the company5.280% Ameriprise Financial Inc's full portfolio →

BlackRock, Inc.

7.9M

% of company

9.35%

Change vs last qtr

+737.8K (+10.2%)

Held since

≤2021

Ameriprise Financial Inc

4.5M

% of company

5.28%

Change vs last qtr

−1.1M (−20.2%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding NPK International Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting NPKI on Form N-PORT; together they hold 43.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$40.6M	2.6M	3.01%	0.00%	June 30, 2026
AU Avantis U.S. Small Cap Value ETF American Century ETF Trust	$37.6M	2.6M	3.05%	0.14%	May 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$40.6M

% of company

3.01%

% of the fund

0.00%

As of

June 30, 2026

Avantis U.S. Small Cap Value ETF

American Century ETF Trust

Position value

$37.6M

% of company

3.05%

% of the fund

0.14%

As of

May 31, 2026

23 more funds behind a free account

See every fund holding NPK International Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
LM Lanigan Matthew Insider	1.0M	1.21%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.210% Lanigan Matthew's insider activity →
PG Piontek Gregg Insider	982.2K	1.16%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.160% Piontek Gregg's insider activity →

Lanigan Matthew

Insider

1.0M

% of company

1.21%

Change vs last qtr

—

Held since

—

Piontek Gregg

Insider

982.2K

% of company

1.16%

Change vs last qtr

—

Held since

—

13 more holders behind a free account

See every insider and 5%+ holder of NPK International Inc..

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