Hobart Kalkstein

Insider Reports History

Reporting-owner location: Boston, MA
Latest reporting-owner signature: By: Mazda Cintron, pursuant to a power of attorney from Hobart C. Kalkstein
Source: Latest parsed Forms 3/4/5 signature
Transaction source note: Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Hobart Kalkstein

Form 4 holding Executive Vice President

CABOT CORP

Security class: Common Stock
Shares / value: 53,169
Estimated value: $5,785,851
Report date: 18 Nov 2024
Price: $108.82
Ownership: Direct

Form 4 holding Executive Vice President

CABOT CORP

Security class: Common Stock
Shares / value: 7,163
Estimated value: $779,449
Report date: 18 Nov 2024
Price: $108.82
Ownership: Through the Trustee for the Corporation's 401(k) Plan

Form 4 holding Executive Vice President

CABOT CORP

Security class: Phantom Stock Units
Shares / value: 10,356
Estimated value: $773,813
Report date: 13 Jun 2025
Price: $74.72
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Form 4 holding Executive Vice President

CABOT CORP

Security class: Employee Stock Option (Right to Buy)
Shares / value: 5,594
Estimated value
Report date: 11 Nov 2024
Price
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Insider Reports Filed by Hobart Kalkstein

4 CBT

CABOT CORP

Report period: 13 Jun 2025
Transactions: 1
Transaction value: +$4,632
Accepted by SEC: 16 Jun 2025, 18:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 14 Mar 2025
Transactions: 1
Transaction value: +$4,404
Accepted by SEC: 18 Mar 2025, 17:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 31 Dec 2024
Transactions: 1
Transaction value: +$63,610
Accepted by SEC: 03 Jan 2025, 17:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 13 Dec 2024
Transactions: 1
Transaction value: +$4,087
Accepted by SEC: 17 Dec 2024, 17:12
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 18 Nov 2024
Transactions: 2
Transaction value: -$409,707
Accepted by SEC: 20 Nov 2024, 17:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 08 Nov 2024
Transactions: 10
Transaction value: -$2,935,232
Accepted by SEC: 13 Nov 2024, 17:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 30 Sep 2024
Transactions: 1
Transaction value: +$8,108
Accepted by SEC: 02 Oct 2024, 17:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 13 Sep 2024
Transactions: 1
Transaction value: +$4,039
Accepted by SEC: 17 Sep 2024, 17:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 19 Aug 2024
Transactions: 9
Transaction value: -$1,216,217
Accepted by SEC: 21 Aug 2024, 17:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 14 Jun 2024
Transactions: 1
Transaction value: +$4,022
Accepted by SEC: 18 Jun 2024, 17:05
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 15 May 2024
Transactions: 6
Transaction value: -$738,556
Accepted by SEC: 17 May 2024, 16:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 07 Mar 2024
Transactions: 2
Transaction value: -$669,370
Accepted by SEC: 11 Mar 2024, 16:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 29 Dec 2023
Transactions: 1
Transaction value: +$46,704
Accepted by SEC: 03 Jan 2024, 16:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 08 Dec 2023
Transactions: 1
Transaction value: +$3,482
Accepted by SEC: 12 Dec 2023, 16:30
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 20 Nov 2023
Transactions: 2
Transaction value: -$579,112
Accepted by SEC: 22 Nov 2023, 16:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 10 Nov 2023
Transactions: 9
Transaction value: -$1,441,811
Accepted by SEC: 14 Nov 2023, 17:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 29 Sep 2023
Transactions: 1
Transaction value: +$3,032
Accepted by SEC: 03 Oct 2023, 19:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 08 Sep 2023
Transactions: 1
Transaction value: +$3,445
Accepted by SEC: 11 Sep 2023, 17:15
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 09 Jun 2023
Transactions: 1
Transaction value: +$3,426
Accepted by SEC: 13 Jun 2023, 16:25
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 10 Mar 2023
Transactions: 1
Transaction value: +$3,154
Accepted by SEC: 14 Mar 2023, 13:00
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 03 Mar 2023
Transactions: 1
Transaction value: -$832,573
Accepted by SEC: 06 Mar 2023, 16:15
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 30 Dec 2022
Transactions: 1
Transaction value: +$58,069
Accepted by SEC: 04 Jan 2023, 16:21
Role: Executive Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 09 Dec 2022
Transactions: 1
Transaction value: +$2,818
Accepted by SEC: 13 Dec 2022, 11:30
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 21 Nov 2022
Transactions: 2
Transaction value: -$217,462
Accepted by SEC: 22 Nov 2022, 15:05
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 11 Nov 2022
Transactions: 2
Transaction value: $0
Accepted by SEC: 15 Nov 2022, 15:05
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 08 Nov 2022
Transactions: 1
Transaction value: -$148,548
Accepted by SEC: 09 Nov 2022, 15:05
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 30 Sep 2022
Transactions: 1
Transaction value: +$7,602
Accepted by SEC: 03 Oct 2022, 16:05
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 09 Sep 2022
Transactions: 1
Transaction value: +$2,823
Accepted by SEC: 12 Sep 2022, 16:45
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 10 Jun 2022
Transactions: 1
Transaction value: +$2,809
Accepted by SEC: 13 Jun 2022, 20:00
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 02 Jun 2022
Transactions: 3
Transaction value: -$269,280
Accepted by SEC: 06 Jun 2022, 16:18
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 11 Mar 2022
Transactions: 1
Transaction value: +$2,794
Accepted by SEC: 15 Mar 2022, 16:20
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 16 Feb 2022
Transactions: 3
Transaction value: +$323,693
Accepted by SEC: 17 Feb 2022, 11:54
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 11 Feb 2022
Transactions: 3
Transaction value: +$204,751
Accepted by SEC: 15 Feb 2022, 16:38
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 09 Feb 2022
Transactions: 2
Transaction value: -$277,800
Accepted by SEC: 11 Feb 2022, 11:33
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 31 Dec 2021
Transactions: 1
Transaction value: +$73,542
Accepted by SEC: 04 Jan 2022, 12:15
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 10 Dec 2021
Transactions: 1
Transaction value: +$2,295
Accepted by SEC: 13 Dec 2021, 15:46
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 22 Nov 2021
Transactions: 2
Transaction value: -$65,230
Accepted by SEC: 24 Nov 2021, 08:01
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 12 Nov 2021
Transactions: 2
Transaction value: $0
Accepted by SEC: 16 Nov 2021, 16:23
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 09 Nov 2021
Transactions: 1
Transaction value: -$81,060
Accepted by SEC: 12 Nov 2021, 07:52
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 30 Sep 2021
Transactions: 1
Transaction value: +$7,993
Accepted by SEC: 04 Oct 2021, 10:48
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 10 Sep 2021
Transactions: 1
Transaction value: +$2,101
Accepted by SEC: 13 Sep 2021, 20:46
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 11 Jun 2021
Transactions: 1
Transaction value: +$2,089
Accepted by SEC: 14 Jun 2021, 19:08
Role: Senior Vice President
Next action: Open filing details

4 CBT

CABOT CORP

Report period: 05 May 2021
Transactions: 8
Transaction value: +$358,849
Accepted by SEC: 07 May 2021, 15:28
Role: Senior Vice President
Next action: Open filing details

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