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 Mar 31, 2025
Ownership Breakdown
210
Institutional Holders
▲ 19 vs Q4
$845.50M
Total Inst. Value
▼ $34.63M vs Q4
20.79M
Shares Outstanding
freeFloat 88.69%
19.73M
13F Shares Held
▼ 135,140 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
HSII largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. services-employment agencies | 3.32M | 16.23% | 16.23% | $142.26B | May 2, 2025 | ▼ 27.2K |
VANGUARD GROUP INC services-employment agencies | 1.52M | 7.44% | 7.44% | $65.20B | May 9, 2025 | ▲ 4.7K |
DIMENSIONAL FUND ADVISORS LP services-employment agencies | 1.32M | 6.47% | 6.47% | $56.73B | May 13, 2025 | ▼ 34.8K |
RENAISSANCE TECHNOLOGIES LLC services-employment agencies | 1.15M | 5.62% | 5.62% | $49.29B | May 14, 2025 | ▲ 44.3K |
CORVEX MANAGEMENT LP services-employment agencies | 1.00M | 4.90% | 4.90% | $42.94B | May 15, 2025 | ▲ 440.1K |
MAK CAPITAL ONE LLC services-employment agencies | 997.5K | 4.87% | 4.87% | $42.72B | May 15, 2025 | — held |
STATE STREET CORP services-employment agencies | 781.4K | 3.82% | 3.82% | $33.47B | May 15, 2025 | ▼ 19.4K |
GEODE CAPITAL MANAGEMENT, LLC services-employment agencies | 511.0K | 2.50% | 2.50% | $21.89B | May 13, 2025 | ▲ 16.1K |
SYSTEMATIC FINANCIAL MANAGEMENT LP services-employment agencies | 499.7K | 2.44% | 2.44% | $21.40B | May 14, 2025 | ▼ 53.2K |
ALLIANZ ASSET MANAGEMENT GMBH services-employment agencies | 496.8K | 2.43% | 2.43% | $21.28B | May 5, 2025 | ▼ 102.6K |
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
21
Increased
+978.3K shares1
New Positions
first time holders27
Decreased
−1.06M shares0
Sold Out
fully exitedNet shares change (top 50)
80.7K
+978.3K / −1.06M
Net new holders
-5
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 94.9% 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 3.32 million shares — equal to 16.23% of outstanding shares — as of March 31, 2025.
A total of 210 institutional investors currently hold HSII stock, with a combined institutional value of approximately $845,499,697 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 94.9% of shares. The largest shareholder is BLACKROCK, INC. with a 16.23% stake. Company insiders hold 11.31%. Data sourced from SEC Form 13F as of March 31, 2025.