Insteel Industries, Inc.
Insteel Industries, Inc. (IIIN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · IIIN · as of Mar 31, 2025
Ownership Breakdown
164
Institutional Holders
▲ 15 vs Q4
$432.17M
Total Inst. Value
▼ $8.80M vs Q4
19.43M
Shares Outstanding
freeFloat 94.98%
16.43M
13F Shares Held
▲ 207,975 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
IIIN largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. steel works, blast furnaces & rolling & finishing mills | 3.29M | 16.91% | 16.91% | $86.66B | May 2, 2025 | ▼ 181.2K |
VANGUARD GROUP INC steel works, blast furnaces & rolling & finishing mills | 1.31M | 6.72% | 6.72% | $34.41B | May 9, 2025 | ▲ 67.4K |
DIMENSIONAL FUND ADVISORS LP steel works, blast furnaces & rolling & finishing mills | 1.17M | 5.99% | 5.99% | $30.70B | May 13, 2025 | ▼ 51.9K |
MIRAE ASSET GLOBAL ETFS HOLDINGS LTD. steel works, blast furnaces & rolling & finishing mills | 989.1K | 5.08% | 5.08% | $26.01B | May 15, 2025 | ▲ 304.7K |
STATE STREET CORP steel works, blast furnaces & rolling & finishing mills | 767.7K | 3.94% | 3.94% | $20.19B | May 15, 2025 | ▼ 22.9K |
ROYCE & ASSOCIATES LP steel works, blast furnaces & rolling & finishing mills | 753.4K | 3.87% | 3.87% | $19.81B | May 6, 2025 | ▼ 60.3K |
FIRST EAGLE INVESTMENT MANAGEMENT, LLC steel works, blast furnaces & rolling & finishing mills | 517.1K | 2.65% | 2.65% | $13.60B | May 12, 2025 | ▲ 47.3K |
AMERICAN CENTURY COMPANIES INC steel works, blast furnaces & rolling & finishing mills | 472.9K | 2.43% | 2.43% | $12.44B | May 13, 2025 | ▼ 64.6K |
GEODE CAPITAL MANAGEMENT, LLC steel works, blast furnaces & rolling & finishing mills | 446.9K | 2.29% | 2.29% | $11.76B | May 13, 2025 | ▲ 13.6K |
INVENOMIC CAPITAL MANAGEMENT LP steel works, blast furnaces & rolling & finishing mills | 351.7K | 1.80% | 1.80% | $9.25B | May 15, 2025 | ▲ 136.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
25
Increased
+997.6K shares6
New Positions
first time holders18
Decreased
−785.5K shares0
Sold Out
fully exitedNet shares change (top 50)
+212.1K
+997.6K / −785.5K
Net new holders
+13
6 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
IIIN insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
1
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
WOLTZ H O III Chairman, President and CEO | Apr 22, 2026 | Gift | 10,022 | — | — | 491.3K | Form 4 ↗ |
Wagner Richard Senior Vice President and COO | Feb 26, 2026 | Sale | 1,679 | $37.67 | $63.2K | 40.0K | Form 4 ↗ |
York James R. Senior Vice President | Feb 14, 2026 | Tax Withhold | 418 | $37.58 | $15.7K | 9.7K | Form 4 ↗ |
Wagner Richard Senior Vice President and COO | Feb 14, 2026 | Tax Withhold | 592 | $37.58 | $22.2K | 41.7K | Form 4 ↗ |
Jafroodi Scot R VP, CFO and Treasurer | Feb 14, 2026 | Tax Withhold | 538 | $37.58 | $20.2K | 48.2K | Form 4 ↗ |
WOLTZ H O III Chairman, President and CEO | Feb 14, 2026 | Tax Withhold | 1,508 | $37.58 | $56.7K | 501.3K | Form 4 ↗ |
Southern Elizabeth Carroll VP, Secretary and CLO | Feb 10, 2026 | Award | 2,475 | $37.00 | $91.6K | 2.5K | Form 4 ↗ |
Southern Elizabeth Carroll VP, Secretary and CLO | Feb 10, 2026 | Award | 1,014 | — | — | 1.0K | Form 4 ↗ |
York James R. Senior Vice President | Feb 10, 2026 | Award | 2,475 | $37.00 | $91.6K | 2.5K | Form 4 ↗ |
York James R. Senior Vice President | Feb 10, 2026 | Award | 1,014 | — | — | 1.0K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Insteel Industries, Inc. (IIIN) is primarily owned by institutional investors, who hold approximately 84.5% of total shares outstanding. Company insiders own approximately 5.02%, while retail and public investors account for the remaining 10.46%.
The largest institutional shareholder of Insteel Industries, Inc. is BLACKROCK, INC., holding approximately 3.29 million shares — equal to 16.91% of outstanding shares — as of March 31, 2025.
A total of 164 institutional investors currently hold IIIN stock, with a combined institutional value of approximately $432,172,269 as of the most recent 13F filing period.
Frequently asked questions
IIIN ownershipInsteel Industries, Inc. (IIIN) is primarily owned by institutional investors, who hold approximately 84.5% of shares. The largest shareholder is BLACKROCK, INC. with a 16.91% stake. Company insiders hold 5.02%. Data sourced from SEC Form 13F as of March 31, 2025.