iSpecimen Inc.
iSpecimen Inc. (ISPC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ISPC · as of Jun 30, 2024
Ownership Breakdown
13
Institutional Holders
▲ 2 vs Q1
$103,118
Total Inst. Value
▲ $34,024 vs Q1
138,862
Shares Outstanding
freeFloat 99.01%
334,363
13F Shares Held
▲ 35,162 vs Q1
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
ISPC largest shareholders · institutional ownership
Q2 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK INC. services-commercial physical & biological research | 56.5K | 61.91% | 61.91% | $17.47M | Aug 13, 2024 | — held |
HRT FINANCIAL LP services-commercial physical & biological research | 45.9K | 50.30% | 50.30% | $14.00M | Aug 12, 2024 | NEW |
VIRTU FINANCIAL LLC services-commercial physical & biological research | 42.1K | 46.09% | 46.09% | $13.00M | Aug 9, 2024 | NEW |
GEODE CAPITAL MANAGEMENT, LLC services-commercial physical & biological research | 38.5K | 42.16% | 42.16% | $11.89M | Aug 9, 2024 | — held |
VANGUARD GROUP INC services-commercial physical & biological research | 36.0K | 39.41% | 39.41% | $11.12M | Aug 13, 2024 | ▼ 40.6K |
GRIMES & COMPANY, INC. services-commercial physical & biological research | 30.8K | 33.75% | 33.75% | $9.52M | Jul 22, 2024 | — held |
CITADEL ADVISORS LLC services-commercial physical & biological research | 25.5K | 27.92% | 27.92% | $7.88M | Aug 14, 2024 | ▲ 25.5K |
JANE STREET GROUP, LLC services-commercial physical & biological research | 19.9K | 21.78% | 21.78% | $6.14M | Aug 15, 2024 | NEW |
STONEX GROUP INC. services-commercial physical & biological research | 14.7K | 16.14% | 16.14% | $4.55M | Aug 13, 2025 | NEW |
NORTHERN TRUST CORP services-commercial physical & biological research | 13.8K | 15.12% | 15.12% | $4.27M | Aug 14, 2024 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q2 2024 vs prior quarter
Q2 2024
1
Increased
+25.5K shares6
New Positions
first time holders1
Decreased
−40.6K shares5
Sold Out
fully exitedNet shares change (top 50)
15.1K
+25.5K / −40.6K
Net new holders
+1
6 new / 5 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ISPC insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
2
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 |
|---|---|---|---|---|---|---|---|
Dhaliwal Avtar director | Sep 25, 2024 | Award | 168 | $5.12 | $860.16 | 168 | Form 4 ↗ |
Paolone Richard director | Sep 25, 2024 | Award | 168 | $5.12 | $860.16 | 168 | Form 4 ↗ |
Field Katharyn director | Sep 25, 2024 | Award | 168 | $5.12 | $860.16 | 168 | Form 4 ↗ |
Ross Andrew L. director | Jan 2, 2024 | Award | 10,000 | $0.53 | $5.3K | 33.5K | Form 4 ↗ |
Mock Theresa L director | Jan 2, 2024 | Award | 10,000 | $0.53 | $5.3K | 16.7K | Form 4 ↗ |
Graham Elizabeth Ames director | Mar 21, 2024 | Award | 8,340 | $0.28 | $2.3K | 8.3K | Form 4 ↗ |
Gullans Steven R. Ph.D. director | Jan 2, 2024 | Award | 10,000 | $0.53 | $5.3K | 33.5K | Form 4 ↗ |
Brooks John L. III director | Jan 2, 2024 | Award | 10,000 | $0.53 | $5.3K | 33.5K | Form 4 ↗ |
Bielak Benjamin Chief Info Officer & Secretary | Sep 14, 2023 | Purchase | 18,000 | $0.72 | $13.0K | 84.3K | Form 4 ↗ |
Curley Tracy CEO, CFO and Treasurer | May 31, 2023 | Purchase | 4,400 | $1.25 | $5.5K | 49.5K | 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
iSpecimen Inc. (ISPC) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 0.99%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of iSpecimen Inc. is BLACKROCK INC., holding approximately 56,538 shares — equal to 61.91% of outstanding shares — as of June 30, 2024.
A total of 13 institutional investors currently hold ISPC stock, with a combined institutional value of approximately $103,118 as of the most recent 13F filing period.
Frequently asked questions
ISPC ownershipiSpecimen Inc. (ISPC) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BLACKROCK INC. with a 61.91% stake. Company insiders hold 0.99%. Data sourced from SEC Form 13F as of June 30, 2024.