NSP

SEC source: 0001127602-17-025497 · form4.xml · nonDerivative · entry 1

MORPHY JOHN M · CIK 0001229144 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,887

SEC source: 0001127602-17-025415 · form4.xml · nonDerivative · entry 1

MINCKS JAY E · CIK 0001198985 · EVP of Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,750

SEC source: 0001127602-17-025243 · form4.xml · nonDerivative · entry 2

RAWSON RICHARD G · CIK 0001055610 · Director · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 106,611

SEC source: 0001127602-17-025346 · form4.xml · nonDerivative · entry 1

ARIZPE ARTHUR A · CIK 0001055604 · EVP of Client Services and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,653

SEC source: 0001127602-17-025243 · form4.xml · nonDerivative · entry 1

RAWSON RICHARD G · CIK 0001055610 · Director · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 118,152

F1 · price: Weighted average price. Actual prices ranged from $84.00 to $84.30. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders.

SEC source: 0001127602-17-025008 · form4.xml · nonDerivative · entry 2

MINCKS JAY E · CIK 0001198985 · EVP of Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,750

SEC source: 0001127602-17-025008 · form4.xml · nonDerivative · entry 1

MINCKS JAY E · CIK 0001198985 · EVP of Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,350

F1 · price: Weighted average price. Actual prices ranged from $84.50 to $84.90. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders.

F2 · balance_after: Includes 35 shares purchased through the Insperity Employee Stock Purchase Plan.

SEC source: 0001127602-17-024879 · form4.xml · nonDerivative · entry 2

RAWSON RICHARD G · CIK 0001055610 · Director · President

10b5-1 filing: Not disclosed

Ownership: Indirect · By Self, as General Partner of POM Services, LLC, which is the General Partner of R&D Rawson, LP

Disclosed balance after: 175,377

F1 · price: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 2, 2017.

F2 · price: Weighted average price. Actual prices ranged from $80.00 to $88.00. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders.

SEC source: 0001127602-17-024879 · form4.xml · nonDerivative · entry 1

RAWSON RICHARD G · CIK 0001055610 · Director · President

10b5-1 filing: Not disclosed

Ownership: Indirect · By Self, as General Partner of POM Services, LLC, which is the General Partner of RDKB Rawson, LP

Disclosed balance after: 209,425

F1 · price: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 2, 2017.

F2 · price: Weighted average price. Actual prices ranged from $80.00 to $88.00. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders.

SEC source: 0001193805-17-001262 · form406297178_07052017.xml · nonDerivative · entry 1

Feld Peter A · CIK 0001410600 · Former Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,647

F1 · price: Mr. Feld was awarded these shares in lieu of $6,333 cash compensation for his services as a member of the Board of Directors (the "Board") of Insperity, Inc. (the "Issuer") during the second quarter of 2017, based on a June 30, 2017 closing price per share of $71.00. Compensation includes a quarterly director's fee of $15,250 and a quarterly fee of $2,500 for serving as a member of the Compensation Committee and $1,250 for serving as a member of the Nominating and Corporate Governance Committee of the Board, however, Mr. Feld received a pro-rata portion of such compensation in light of his resignation from the Board, effective May 9, 2017. In addition to the shares of common stock awarded, Mr. Feld will also receive $14.33 in cash.

F2 · balance_after: In light of Mr. Feld's resignation from the Board, effective May 9, 2017, 482 shares of the Issuer's restricted stock that Mr. Feld received as part of his initial director award on June 10, 2015 vested and the remaining 483 shares of such award were forfeited.

SEC source: 0001127602-17-021921 · form4.xml · nonDerivative · entry 1

KAUFMAN CAROL R · CIK 0001181958 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,215

F1 · price: Annual stock award pursuant to the Insperity, Inc. Directors Compensation Plan.

SEC source: 0001127602-17-021919 · form4.xml · nonDerivative · entry 1

MORPHY JOHN M · CIK 0001229144 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,387

F1 · price: Annual stock award pursuant to the Insperity, Inc. Directors Compensation Plan.

SEC source: 0001127602-17-021917 · form4.xml · nonDerivative · entry 1

Michelle McKenna · CIK 0001636583 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,345

F1 · price: Annual stock award pursuant to the Insperity, Inc. Directors Compensation Plan.

SEC source: 0001127602-17-021915 · form4.xml · nonDerivative · entry 1

YOUNG AUSTIN P · CIK 0001021469 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,817

F1 · price: Annual stock award pursuant to the Insperity, Inc. Directors Compensation Plan.

SEC source: 0001127602-17-021913 · form4.xml · nonDerivative · entry 1

SORENSEN NORMAN R · CIK 0001166873 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,234

F1 · price: Annual stock award pursuant to the Insperity, Inc. Directors Compensation Plan.

SEC source: 0001127602-17-021911 · form4.xml · nonDerivative · entry 1

CLIFFORD TIM · CIK 0001590858 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,406

F1 · price: Annual stock award pursuant to the Insperity, Inc. Directors Compensation Plan.

SEC source: 0001127602-17-019437 · form4.xml · nonDerivative · entry 1

RAWSON RICHARD G · CIK 0001055610 · Director · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 128,868

F1 · price: Represents a gift of shares to a charitable organization.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 20

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Managed Account of Starboard Value LP

Disclosed balance after: 117,362

F4 · ownership.nature: Shares of common stock held in an account managed by Starboard Value LP (the "Managed Account"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of Starboard Value LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares held in the Managed Account for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 19

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity C LP

Disclosed balance after: 42,726

F3 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity C LP ("Starboard C LP"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the investment manager of Starboard C LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard C LP for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 18

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity S LLC

Disclosed balance after: 78,754

F2 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity S LLC ("Starboard S LLC"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the manager of Starboard S LLC, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard S LLC for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 17

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity Master Fund Ltd.

Disclosed balance after: 351,793

F1 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity Master Fund Ltd ("Starboard V&O Fund"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP LLC ("Starboard Value GP"), the general partner of the investment manager of Starboard V&O Fund, and as a member and member of the Management Committee of Starboard Principal Co GP LLC ("Principal GP"), the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard V&O Fund for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 16

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Managed Account of Starboard Value LP

Disclosed balance after: 120,097

F4 · ownership.nature: Shares of common stock held in an account managed by Starboard Value LP (the "Managed Account"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of Starboard Value LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares held in the Managed Account for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 15

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity C LP

Disclosed balance after: 43,722

F3 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity C LP ("Starboard C LP"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the investment manager of Starboard C LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard C LP for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 14

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity S LLC

Disclosed balance after: 80,589

F2 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity S LLC ("Starboard S LLC"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the manager of Starboard S LLC, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard S LLC for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 13

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity Master Fund Ltd.

Disclosed balance after: 359,990

F1 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity Master Fund Ltd ("Starboard V&O Fund"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP LLC ("Starboard Value GP"), the general partner of the investment manager of Starboard V&O Fund, and as a member and member of the Management Committee of Starboard Principal Co GP LLC ("Principal GP"), the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard V&O Fund for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 12

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Managed Account of Starboard Value LP

Disclosed balance after: 120,375

F4 · ownership.nature: Shares of common stock held in an account managed by Starboard Value LP (the "Managed Account"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of Starboard Value LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares held in the Managed Account for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 11

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity C LP

Disclosed balance after: 43,823

F3 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity C LP ("Starboard C LP"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the investment manager of Starboard C LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard C LP for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 10

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity S LLC

Disclosed balance after: 80,776

F2 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity S LLC ("Starboard S LLC"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the manager of Starboard S LLC, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard S LLC for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 9

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity Master Fund Ltd.

Disclosed balance after: 360,824

F1 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity Master Fund Ltd ("Starboard V&O Fund"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP LLC ("Starboard Value GP"), the general partner of the investment manager of Starboard V&O Fund, and as a member and member of the Management Committee of Starboard Principal Co GP LLC ("Principal GP"), the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard V&O Fund for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 8

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Managed Account of Starboard Value LP

Disclosed balance after: 120,892

F4 · ownership.nature: Shares of common stock held in an account managed by Starboard Value LP (the "Managed Account"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of Starboard Value LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares held in the Managed Account for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 7

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity C LP

Disclosed balance after: 44,011

F3 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity C LP ("Starboard C LP"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the investment manager of Starboard C LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard C LP for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 6

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity S LLC

Disclosed balance after: 81,123

F2 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity S LLC ("Starboard S LLC"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the manager of Starboard S LLC, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard S LLC for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 5

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity Master Fund Ltd.

Disclosed balance after: 362,372

F1 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity Master Fund Ltd ("Starboard V&O Fund"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP LLC ("Starboard Value GP"), the general partner of the investment manager of Starboard V&O Fund, and as a member and member of the Management Committee of Starboard Principal Co GP LLC ("Principal GP"), the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard V&O Fund for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 4

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Managed Account of Starboard Value LP

Disclosed balance after: 124,151

F4 · ownership.nature: Shares of common stock held in an account managed by Starboard Value LP (the "Managed Account"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of Starboard Value LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares held in the Managed Account for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 3

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity C LP

Disclosed balance after: 45,197

F3 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity C LP ("Starboard C LP"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the investment manager of Starboard C LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard C LP for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 2

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity S LLC

Disclosed balance after: 83,310

F2 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity S LLC ("Starboard S LLC"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the manager of Starboard S LLC, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard S LLC for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-001300 · form406297178_05042017.xml · nonDerivative · entry 1

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity Master Fund Ltd.

Disclosed balance after: 372,140

F1 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity Master Fund Ltd ("Starboard V&O Fund"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP LLC ("Starboard Value GP"), the general partner of the investment manager of Starboard V&O Fund, and as a member and member of the Management Committee of Starboard Principal Co GP LLC ("Principal GP"), the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard V&O Fund for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0001127602-17-016863 · form4.xml · nonDerivative · entry 1

SHARP DOUGLAS S · CIK 0001198988 · SVP Finance, CFO & Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,402

F1 · price: Weighted average price. Actual prices ranged from $87.90 to $88.05. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders.

SEC source: 0001127602-17-016861 · form4.xml · nonDerivative · entry 1

MINCKS JAY E · CIK 0001198985 · EVP of Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,174

F1 · price: Weighted average price. Actual prices ranged from $90.60 to $90.75. Full information regarding the number of shares sold at each separate price will be provided to the SEC's staff, Insperity, Inc. or its stockholders.

F2 · balance_after: Includes 162 shares purchased through the Insperity Employee Stock Purchase Plan.

SEC source: 0000921895-17-000914 · form406297178_04032017.xml · nonDerivative · entry 1

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,041

F1 · price: Mr. Feld was awarded these shares in lieu of $17,750 cash compensation for his services as a member of the Board of Directors of Insperity, Inc. (the "Issuer") during the first quarter of 2017, based on a March 31, 2017 closing price per share of $88.65. Compensation includes a quarterly director's fee of $15,250 and a quarterly fee of $2,500 for serving as a member of the Compensation Committee of the Issuer's Board of Directors. In addition to the shares of common stock awarded, Mr. Feld will also receive $20.00 in cash.

SEC source: 0001127602-17-013395 · form4.xml · nonDerivative · entry 1

SARVADI PAUL J · CIK 0001032399 · Director · Chairman of the Board & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,248

F1 · kind: Payment of tax liability by withholding securities incident to the vesting of a restricted stock award.

SEC source: 0001127602-17-013408 · form4.xml · nonDerivative · entry 1

Herink Daniel D · CIK 0001398237 · SVP Legal, Gen Counsel & Sec

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,014

F1 · kind: Payment of tax liability by withholding securities incident to the vesting of a restricted stock award.

SEC source: 0001127602-17-013405 · form4.xml · nonDerivative · entry 1

ARIZPE ARTHUR A · CIK 0001055604 · EVP of Client Services and COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,153

F1 · kind: Payment of tax liability by withholding securities incident to the vesting of a restricted stock award.

F2 · balance_after: Amounts reflect the transfer since February 21, 2017 to the Arizpe Investment Limited Partnership of 3,139 shares that were previously owned directly.

SEC source: 0001127602-17-013402 · form4.xml · nonDerivative · entry 1

MINCKS JAY E · CIK 0001198985 · EVP of Sales & Marketing

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,012

F1 · kind: Payment of tax liability by withholding securities incident to the vesting of a restricted stock award.

SEC source: 0001127602-17-013399 · form4.xml · nonDerivative · entry 1

SHARP DOUGLAS S · CIK 0001198988 · SVP Finance, CFO & Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,402

F1 · kind: Payment of tax liability by withholding securities incident to the vesting of a restricted stock award.

SEC source: 0001127602-17-013397 · form4.xml · nonDerivative · entry 1

RAWSON RICHARD G · CIK 0001055610 · Director · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,743

F1 · kind: Payment of tax liability by withholding securities incident to the vesting of a restricted stock award.

SEC source: 0000921895-17-000562 · form406297178_03022017.xml · nonDerivative · entry 8

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Managed Account of Starboard Value LP

Disclosed balance after: 131,146

F4 · ownership.nature: Shares of common stock held in an account managed by Starboard Value LP (the "Managed Account"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of Starboard Value LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares held in the Managed Account for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-000562 · form406297178_03022017.xml · nonDerivative · entry 7

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity C LP

Disclosed balance after: 47,743

F3 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity C LP ("Starboard C LP"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the investment manager of Starboard C LP, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard C LP for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-000562 · form406297178_03022017.xml · nonDerivative · entry 6

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity S LLC

Disclosed balance after: 88,004

F2 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity S LLC ("Starboard S LLC"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP, the general partner of the manager of Starboard S LLC, and as a member and member of the Management Committee of Principal GP, the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard S LLC for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

SEC source: 0000921895-17-000562 · form406297178_03022017.xml · nonDerivative · entry 5

Feld Peter A · CIK 0001410600 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Starboard Value and Opportunity Master Fund Ltd.

Disclosed balance after: 393,107

F1 · ownership.nature: Shares of common stock directly held by Starboard Value and Opportunity Master Fund Ltd ("Starboard V&O Fund"). The Reporting Person, solely by virtue of his position as a member of the Management Committee of Starboard Value GP LLC ("Starboard Value GP"), the general partner of the investment manager of Starboard V&O Fund, and as a member and member of the Management Committee of Starboard Principal Co GP LLC ("Principal GP"), the general partner of the member of Starboard Value GP, may be deemed to beneficially own the shares directly held by Starboard V&O Fund for purposes of Section 16. The Reporting Person expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.