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 Sep 30, 2025
Ownership Breakdown
199
Institutional Holders
▲ 13 vs Q2
$606.55M
Total Inst. Value
▲ $11.07M vs Q2
19.43M
Shares Outstanding
freeFloat 94.98%
15.82M
13F Shares Held
▼ 179,517 vs Q2
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
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. steel works, blast furnaces & rolling & finishing mills | 3.25M | 16.70% | 16.70% | $124.74B | Nov 12, 2025 | ▲ 15.8K |
VANGUARD GROUP INC steel works, blast furnaces & rolling & finishing mills | 1.40M | 7.17% | 7.17% | $53.58B | Nov 7, 2025 | ▲ 55.7K |
DIMENSIONAL FUND ADVISORS LP steel works, blast furnaces & rolling & finishing mills | 1.07M | 5.49% | 5.49% | $40.99B | Nov 12, 2025 | ▼ 9.1K |
MIRAE ASSET GLOBAL ETFS HOLDINGS LTD. steel works, blast furnaces & rolling & finishing mills | 990.8K | 5.08% | 5.08% | $37.99B | Nov 14, 2025 | ▲ 11.9K |
STATE STREET CORP steel works, blast furnaces & rolling & finishing mills | 723.2K | 3.71% | 3.71% | $27.73B | Nov 14, 2025 | ▼ 20.4K |
GEODE CAPITAL MANAGEMENT, LLC steel works, blast furnaces & rolling & finishing mills | 481.6K | 2.47% | 2.47% | $18.47B | Nov 12, 2025 | ▲ 32.8K |
FIRST EAGLE INVESTMENT MANAGEMENT, LLC steel works, blast furnaces & rolling & finishing mills | 402.3K | 2.06% | 2.06% | $15.42B | Nov 12, 2025 | ▼ 15.7K |
AMERICAN CENTURY COMPANIES INC steel works, blast furnaces & rolling & finishing mills | 350.1K | 1.80% | 1.80% | $13.42B | Nov 12, 2025 | ▼ 37.6K |
BRUCE & CO., INC. steel works, blast furnaces & rolling & finishing mills | 343.4K | 1.76% | 1.76% | $13.17B | Nov 13, 2025 | — held |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC steel works, blast furnaces & rolling & finishing mills | 320.6K | 1.65% | 1.65% | $12.29B | Nov 10, 2025 | ▲ 42.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
21
Increased
+553.6K shares3
New Positions
first time holders23
Decreased
−722.5K shares0
Sold Out
fully exitedNet shares change (top 50)
168.9K
+553.6K / −722.5K
Net new holders
+1
3 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 81.4% of total shares outstanding. Company insiders own approximately 5.02%, while retail and public investors account for the remaining 13.56%.
The largest institutional shareholder of Insteel Industries, Inc. is BLACKROCK, INC., holding approximately 3.25 million shares — equal to 16.70% of outstanding shares — as of September 30, 2025.
A total of 199 institutional investors currently hold IIIN stock, with a combined institutional value of approximately $606,551,000 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 81.4% of shares. The largest shareholder is BLACKROCK, INC. with a 16.70% stake. Company insiders hold 5.02%. Data sourced from SEC Form 13F as of September 30, 2025.