Heidrick & Struggles International, Inc.
Heidrick & Struggles International, Inc. (HSII) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · HSII · as of Sep 30, 2025
Ownership Breakdown
214
Institutional Holders
▲ 6 vs Q2
$980.20M
Total Inst. Value
▲ $77.82M vs Q2
20.79M
Shares Outstanding
freeFloat 88.69%
19.70M
13F Shares Held
▼ 24,337 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
HSII largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. services-employment agencies | 3.29M | 15.92% | 15.92% | $163.60B | Nov 12, 2025 | ▼ 96.9K |
VANGUARD GROUP INC services-employment agencies | 1.54M | 7.44% | 7.44% | $76.45B | Nov 7, 2025 | ▲ 9.3K |
MAK CAPITAL ONE LLC services-employment agencies | 1.21M | 5.88% | 5.88% | $60.41B | Nov 14, 2025 | ▲ 2.3K |
DIMENSIONAL FUND ADVISORS LP services-employment agencies | 1.12M | 5.43% | 5.43% | $55.78B | Nov 12, 2025 | ▼ 110.0K |
RENAISSANCE TECHNOLOGIES LLC services-employment agencies | 1.10M | 5.31% | 5.31% | $54.56B | Nov 13, 2025 | ▼ 5.4K |
CORVEX MANAGEMENT LP services-employment agencies | 1.00M | 4.85% | 4.85% | $49.89B | Nov 14, 2025 | — held |
STATE STREET CORP services-employment agencies | 788.5K | 3.82% | 3.82% | $39.24B | Nov 14, 2025 | ▲ 144 |
AMERICAN CENTURY COMPANIES INC services-employment agencies | 635.8K | 3.08% | 3.08% | $31.64B | Nov 12, 2025 | ▲ 82.6K |
GEODE CAPITAL MANAGEMENT, LLC services-employment agencies | 547.6K | 2.65% | 2.65% | $27.26B | Nov 12, 2025 | ▲ 6.2K |
SYSTEMATIC FINANCIAL MANAGEMENT LP services-employment agencies | 496.6K | 2.40% | 2.40% | $24.71B | Nov 13, 2025 | ▼ 1.6K |
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
22
Increased
+833.1K shares1
New Positions
first time holders25
Decreased
−707.6K shares0
Sold Out
fully exitedNet shares change (top 50)
+125.5K
+833.1K / −707.6K
Net new holders
-2
1 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
HSII insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
19
Sell transactions
0.00
Buy/Sell ratio
$1M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Kaza Vijayabharathi director | Dec 10, 2025 | D-Return | 6,152 | — | — | 0 | Form 4 ↗ |
MONAHAN THOMAS L Chief Executive Officer | Dec 10, 2025 | D-Return | 35,433 | $59.00 | $2.09M | 119.7K | Form 4 ↗ |
MONAHAN THOMAS L Chief Executive Officer | Dec 10, 2025 | D-Return | 46,815 | — | — | 72.9K | Form 4 ↗ |
MONAHAN THOMAS L Chief Executive Officer | Dec 10, 2025 | D-Return | 113,752 | — | — | 0 | Form 4 ↗ |
Murray Thomas J III President | Dec 10, 2025 | D-Return | 17,269 | $59.00 | $1.02M | 64.8K | Form 4 ↗ |
Murray Thomas J III President | Dec 10, 2025 | D-Return | 40,479 | — | — | 24.3K | Form 4 ↗ |
Murray Thomas J III President | Dec 10, 2025 | D-Return | 83,712 | — | — | 0 | Form 4 ↗ |
Heaton Tracey Chief Legal Officer & Corp Sec | Dec 10, 2025 | D-Return | 13,620 | $59.00 | $803.6K | 16.9K | Form 4 ↗ |
Heaton Tracey Chief Legal Officer & Corp Sec | Dec 10, 2025 | D-Return | 11,522 | — | — | 5.4K | Form 4 ↗ |
Heaton Tracey Chief Legal Officer & Corp Sec | Dec 10, 2025 | D-Return | 35,700 | — | — | 0 | 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
Heidrick & Struggles International, Inc. (HSII) is primarily owned by institutional investors, who hold approximately 94.8% of total shares outstanding. Company insiders own approximately 11.31%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Heidrick & Struggles International, Inc. is BLACKROCK, INC., holding approximately 3.29 million shares — equal to 15.92% of outstanding shares — as of September 30, 2025.
A total of 214 institutional investors currently hold HSII stock, with a combined institutional value of approximately $980,204,997 as of the most recent 13F filing period.
Frequently asked questions
HSII ownershipHeidrick & Struggles International, Inc. (HSII) is primarily owned by institutional investors, who hold approximately 94.8% of shares. The largest shareholder is BLACKROCK, INC. with a 15.92% stake. Company insiders hold 11.31%. Data sourced from SEC Form 13F as of September 30, 2025.