Comparable stake leader
BlackRock, Inc.
SEC ownership of INSPERITY, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001000753.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
18 May 2026
- Public ticker
- NSP on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
18 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001000753
- Issuer location
- Kingwood, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of INSPERITY, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
18 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 14%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 14%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
14%
REINHART PARTNERS, LLC.
7.3%
Invesco Ltd.
6.4%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.8%
EARNEST PARTNERS LLC
5.4%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
Company
|
14%
|
$200,625,728
5,181,289 shares
|
+$34,727,341 | 31 Dec 2025 |
| REINHART PARTNERS, LLC. |
13D/G
13F
Company
|
7.3%
|
$106,287,755
2,745,035 shares
|
$0 | 30 Sep 2025 |
| Invesco Ltd. |
13F
13D/G
Company
|
6.4%
from 13D/G
|
$64,943,727
2,401,765 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.8%
|
$58,977,755
2,181,130 shares
|
$0 | 31 Mar 2026 |
| EARNEST PARTNERS LLC |
13F
13D/G
Company
|
5.4%
from 13D/G
|
$55,877,403
2,066,472 shares
|
— | 31 Mar 2026 |
| Mawer Investment Management Ltd. |
13D/G
13F
Company
|
3.2%
|
$46,471,434
1,200,192 shares
|
-$59,101,705 | 31 Dec 2025 |
| Richard G. Rawson |
3/4/5
Director
|
0.61%
|
$6,299,695
232,977 shares
|
— | 18 May 2026 |
| Carol R. Kaufman |
3/4/5
Director
|
0.14%
|
$1,440,366
53,268 shares
|
+$226,200 | 18 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$16,312,595.
Buys
$16,876,565
Insiders: 10
Sells
$563,970
Insiders: 1
Net
+$16,312,595
Shares: +561,716
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 572,566
Shares: 10,850
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 333,000 | 0 | $10,806,886 | $0 | +$10,806,886 |
| 3-6 | 214,437 | 0 | $4,941,270 | $0 | +$4,941,270 |
| 6-9 | 3,000 | 0 | $102,380 | $0 | +$102,380 |
| 9-12 | 22,129 | 10,850 | $1,026,029 | $563,970 | +$462,059 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-17 of 17 reporting-owner rows connected to INSPERITY, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
Paul J. Sarvadi
Net 12M change
+$16,312,595
Latest report
03 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Paul J. Sarvadi | Chairman of the Board & CEO, Director | $58,192,947 | +$14,931,706 | +35% | Mixed | 03 Jun 2026 |
| Arthur A. Arizpe | President and COO | $9,571,972 | Mixed | 02 Mar 2026 | ||
| Richard G. Rawson | Director | $6,299,695 | Mixed | 18 May 2026 | ||
| Douglas S. Sharp | EVP Finance, CFO & Treasurer | $3,417,529 | Mixed | 08 May 2024 | ||
| Daniel D. Herink | EVP Legal, Gen Counsel & Sec | $3,154,219 | Mixed | 17 Nov 2023 | ||
| James D. Allison | EVP, Finance, CFO & Treasurer | $2,109,722 | +$391,780 | +23% | Mixed | 10 Mar 2026 |
| Carol R. Kaufman | Director | $1,440,366 | +$226,200 | +19% | Mixed | 18 May 2026 |
| Sean Patrick Duffy | SVP, Finance & Accounting(PAO) | $1,050,167 | Mixed | 02 Mar 2026 | ||
| Randall Mehl | Director | $862,792 | +$192,480 | +29% | Mixed | 18 May 2026 |
| Tim Clifford | Director | $787,215 | +$100,040 | +15% | Mixed | 18 May 2026 |
| Ellen H. Masterson | Director | $734,974 | +$46,077 | +6.7% | Mixed | 18 May 2026 |
| John L. Lumelleau | Director | $698,199 | +$249,480 | +56% | Mixed | 18 May 2026 |
| Latha Ramchand | Director | $576,519 | +$50,640 | +9.6% | Mixed | 18 May 2026 |
| Christian P. Callens | SVP Legal, Gen Counsel & Sec | $570,688 | +$24,100 | +4.4% | Filing P/S | 11 Mar 2026 |
| Eli Jones | Director | $515,057 | +$100,092 | +24% | Mixed | 18 May 2026 |
| John M. Morphy | Director | $446,484 | Mixed | 18 May 2026 | ||
| Philip W. Wilmington | Director | $289,652 | Mixed | 18 May 2026 |
Recent insider transactions for INSPERITY, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Paul J. Sarvadi | NSP | Common Stock | Purchase | 26.7% | $7,933,650 | $34.05 | 233,000 | 1,105,912 | 03 Jun 2026 | By Self, As General Partner of Our Ship Limited Partnership, Ltd. |
| Philip W. Wilmington | NSP | Common Stock | Award | 137.5% | 6,201 | 10,712 | 18 May 2026 | Direct | ||
| Latha Ramchand | NSP | Common Stock | Award | 41% | 6,201 | 21,321 | 18 May 2026 | Direct | ||
| John M. Morphy | NSP | Common Stock | Award | 60.1% | 6,201 | 16,512 | 18 May 2026 | Direct | ||
| Ellen H. Masterson | NSP | Common Stock | Award | 29.6% | 6,201 | 27,181 | 18 May 2026 | Direct | ||
| Randall Mehl | NSP | Common Stock | Award | 24.1% | 6,201 | 31,908 | 18 May 2026 | Direct | ||
| John L. Lumelleau | NSP | Common Stock | Award | 43.9% | 6,201 | 20,321 | 18 May 2026 | Direct | ||
| Carol R. Kaufman | NSP | Common Stock | Award | 13.2% | 6,201 | 53,268 | 18 May 2026 | Direct | ||
| Eli Jones | NSP | Common Stock | Award | 48.3% | 6,201 | 19,048 | 18 May 2026 | Direct | ||
| Tim Clifford | NSP | Common Stock | Award | 27.1% | 6,201 | 29,113 | 18 May 2026 | Direct | ||
| Richard G. Rawson | NSP | Common Stock | Award | 96.6% | 6,201 | 12,622 | 18 May 2026 | Direct | ||
| Paul J. Sarvadi | NSP | Common Stock | Purchase | 16.7% | $2,873,236 | $28.73 | 100,000 | 699,670 | 05 May 2026 | Direct |
| Paul J. Sarvadi | NSP | Common Stock | Purchase | 2.57% | $589,973 | $23.60 | 25,000 | 997,912 | 19 Mar 2026 | By Self, As General Partner of Our Ship Limited Partnership, Ltd. |
| Paul J. Sarvadi | NSP | Common Stock | Purchase | 19.7% | $3,715,200 | $23.22 | 160,000 | 972,912 | 18 Mar 2026 | By Self, As General Partner of Our Ship Limited Partnership, Ltd. |
| Paul J. Sarvadi | NSP | Common Stock | Purchase | 3.71% | $383,617 | $22.58 | 16,987 | 474,670 | 17 Mar 2026 | Direct |
| Ellen H. Masterson | NSP | Common Stock | Purchase | 6.07% | $23,880 | $19.90 | 1,200 | 20,980 | 11 Mar 2026 | Direct |
| Christian P. Callens | NSP | Common Stock | Purchase | 4.41% | $24,100 | $19.28 | 1,250 | 29,600 | 11 Mar 2026 | Direct |
| James D. Allison | NSP | Common Stock | Purchase | 11.9% | $204,500 | $20.45 | 10,000 | 94,272 | 10 Mar 2026 | Direct |
| Paul J. Sarvadi | NSP | Common Stock | Tax liability | -0.45% | -2,057 | 457,683 | 03 Mar 2026 | Direct | ||
| Paul J. Sarvadi | NSP | Common Stock | Award | 0.3% | 1,384 | 459,740 | 03 Mar 2026 | Direct | ||
| Arthur A. Arizpe | NSP | Common Stock | Tax liability | -0.29% | -282 | 95,836 | 03 Mar 2026 | Direct | ||
| Arthur A. Arizpe | NSP | Common Stock | Award | 0.33% | 319 | 96,118 | 03 Mar 2026 | Direct | ||
| James D. Allison | NSP | Common Stock | Tax liability | -0.18% | -151 | 84,272 | 03 Mar 2026 | Direct | ||
| James D. Allison | NSP | Common Stock | Award | 0.18% | 154 | 84,423 | 03 Mar 2026 | Direct | ||
| Paul J. Sarvadi | NSP | Common Stock | Tax liability | -1.98% | -9,215 | 456,796 | 02 Mar 2026 | Direct | ||
| Paul J. Sarvadi | NSP | Common Stock | Award | 8.22% | 35,395 | 466,011 | 02 Mar 2026 | Direct | ||
| Sean Patrick Duffy | NSP | Common Stock | Tax liability | -2.84% | -659 | 22,521 | 02 Mar 2026 | Direct | ||
| Sean Patrick Duffy | NSP | Common Stock | Award | 96% | 11,351 | 23,180 | 02 Mar 2026 | Direct | ||
| Christian P. Callens | NSP | Common Stock | Tax liability | -3.61% | -1,052 | 28,102 | 02 Mar 2026 | Direct | ||
| Christian P. Callens | NSP | Common Stock | Award | 104.7% | 14,913 | 29,154 | 02 Mar 2026 | Direct | ||
| Arthur A. Arizpe | NSP | Common Stock | Tax liability | -2.09% | -2,029 | 95,229 | 02 Mar 2026 | Direct | ||
| Arthur A. Arizpe | NSP | Common Stock | Award | 16.5% | 13,770 | 97,258 | 02 Mar 2026 | Direct | ||
| James D. Allison | NSP | Common Stock | Tax liability | -1.94% | -1,663 | 83,852 | 02 Mar 2026 | Direct | ||
| James D. Allison | NSP | Common Stock | Award | 32.4% | 20,952 | 85,515 | 02 Mar 2026 | Direct | ||
| James D. Allison | NSP | Common Stock | Options Exercise | 0.72% | 463 | 64,980 | 17 Feb 2026 | Direct | ||
| James D. Allison | NSP | Phantom Stock Performance Units (Stock Settled) | Options Exercise | -22.4% | -463 | 1,605 | 17 Feb 2026 | Direct | ||
| Arthur A. Arizpe | NSP | Common Stock | Options Exercise | 1.16% | 961 | 84,058 | 17 Feb 2026 | Direct | ||
| Arthur A. Arizpe | NSP | Phantom Stock Performance Units (Stock Settled) | Options Exercise | -22.1% | -961 | 3,387 | 17 Feb 2026 | Direct | ||
| Paul J. Sarvadi | NSP | Common Stock | Options Exercise | 0.98% | 4,175 | 432,176 | 17 Feb 2026 | Direct | ||
| Paul J. Sarvadi | NSP | Phantom Stock Performance Units (Stock Settled) | Options Exercise | -22.7% | -4,175 | 14,219 | 17 Feb 2026 | Direct | ||
| Paul J. Sarvadi | NSP | Common Stock | Gift | -1.81% | -15,000 | 812,912 | 29 Dec 2025 | By Self, As General Partner of Our Ship Limited Partnership, Ltd. | ||
| Randall Mehl | NSP | Common Stock | Purchase | 4.05% | $33,880 | $33.88 | 1,000 | 25,707 | 07 Nov 2025 | Direct |
| Randall Mehl | NSP | Common Stock | Purchase | 8.81% | $68,500 | $34.25 | 2,000 | 24,707 | 06 Nov 2025 | Direct |
| Sean Patrick Duffy | NSP | Common Stock | Award | 0.53% | 63 | 11,980 | 06 Oct 2025 | Direct | ||
| Sean Patrick Duffy | NSP | Common Stock | Tax liability | -5.44% | -685 | 11,917 | 06 Oct 2025 | Direct | ||
| Paul J. Sarvadi | NSP | Common Stock | Gift | -0.91% | -7,500 | 812,912 | 22 Sep 2025 | By Self, As General Partner of Our Ship Limited Partnership, Ltd. | ||
| Paul J. Sarvadi | NSP | Common Stock | Sale | -2.47% | $563,970 | $51.98 | -10,850 | 428,001 | 17 Sep 2025 | Direct |
| Tim Clifford | NSP | Common Stock | Purchase | 9.22% | $100,040 | $51.70 | 1,935 | 22,912 | 15 Aug 2025 | Direct |
| Latha Ramchand | NSP | Common Stock | Purchase | 7.08% | $50,640 | $50.64 | 1,000 | 15,120 | 06 Aug 2025 | Direct |
| Carol R. Kaufman | NSP | Common Stock | Purchase | 11.9% | $226,200 | $45.24 | 5,000 | 47,067 | 04 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.