Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| ALLEGRO MICROSYSTEMS, INC.ALGM · Entity 3746 | Director | September 30, 2026 | October 02, 2026 |
| CLEAN HARBORS INCCLH · Entity 3318 | Director | May 20, 2026 | May 22, 2026 |
| COGNEX CORPCGNX · Entity 3527 | Director | February 18, 2026 | February 19, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
ALLEGRO MICROSYSTEMS, INC.
Report date September 30, 2026 · Filed October 02, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Deferred Stock UnitsSEC Table II · derivative / convertible security | Direct | 4,869.982 |
Reported balance
After 2026-09-30 transaction · row 1
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 1 · 2026-09-30 · Grant · Acquired 618.982 · Balance 4,869.982 F1: Each deferred stock unit ("DSU") represents a contingent right to receive one share of the Issuer's Common Stock. F2: As part of the Issuer's non-employee director compensation program, the reporting person elected to receive his quarterly cash board retainer fee in the form of DSUs pursuant to a prior election under the Issuer's Deferred Compensation Plan for Non-Employee Directors. The number of DSUs was calculated by dividing the quarterly cash retainer amount deferred by $36.35, the Fair Market Value of a share of the Issuer's Common Stock on the effective date of the deferral. F3: The DSUs are fully vested when granted and will be settled in a lump sum in whole shares of the Issuer's Common Stock, with cash paid in lieu of any fractional DSU, following the reporting person's separation from service, disability, or death. |
Filing footnotes · ownership attribution and instrument terms
F1: Each deferred stock unit ("DSU") represents a contingent right to receive one share of the Issuer's Common Stock.
F2: As part of the Issuer's non-employee director compensation program, the reporting person elected to receive his quarterly cash board retainer fee in the form of DSUs pursuant to a prior election under the Issuer's Deferred Compensation Plan for Non-Employee Directors. The number of DSUs was calculated by dividing the quarterly cash retainer amount deferred by $36.35, the Fair Market Value of a share of the Issuer's Common Stock on the effective date of the deferral.
F3: The DSUs are fully vested when granted and will be settled in a lump sum in whole shares of the Issuer's Common Stock, with cash paid in lieu of any fractional DSU, following the reporting person's separation from service, disability, or death.
CLEAN HARBORS INC
Report date May 20, 2026 · Filed May 22, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 10,028 |
Reported balance
After 2026-05-20 transaction · row 1
1 source rowRow 1 · 2026-05-20 · Grant · Acquired 652 · Balance 10,028 F1: Award of restricted stock to non-employee director vesting 100% upon the date of the next annual meeting of shareholders. |
Filing footnotes · ownership attribution and instrument terms
F1: Award of restricted stock to non-employee director vesting 100% upon the date of the next annual meeting of shareholders.
COGNEX CORP
Report date February 18, 2026 · Filed February 19, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Indirectby Trust | 23,120 |
Last balance in matching sequence
After 2026-02-18 transaction · row 2
Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rowsRow 1 · 2026-02-18 · Exercise / conversion · Acquired 14,165 · Balance 29,969 F1: The reporting person is a trustee and beneficiary of Willett Parkhill Investment Trust dated August 2, 2010. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose. Row 2 · 2026-02-18 · Tax withholding · Disposed 6,849 · Balance 23,120 F2: This disposition represents shares withheld to satisfy tax withholding obligations on the restricted stock units that vested on February 18, 2026 and are reported herein. F1: The reporting person is a trustee and beneficiary of Willett Parkhill Investment Trust dated August 2, 2010. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose. |
| Restricted Stock UnitSEC Table II · derivative / convertible security · Conversion / exercise price $0.00 · Expires 2028-02-18 | Direct | 56,659 |
Reported balance
After 2026-02-18 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-02-18 · Exercise / conversion · Disposed 14,165 · Balance 56,659 F3: The restricted stock units vest approximately 20%, 30%, and 50% on the first, second, and third anniversaries of the grant date (February 18, 2025), respectively. |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $33.04 · Expires 2035-02-18 | Direct | 193,201 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 4
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 4 · Balance 193,201 |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $39.44 · Expires 2034-02-20 | Direct | 292,246 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 5
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 5 · Balance 292,246 |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $47.21 · Expires 2033-02-21 | Direct | 233,484 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 6
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 6 · Balance 233,484 |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $50.94 · Expires 2030-02-18 | Direct | 180,000 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 7
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 7 · Balance 180,000 |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $51.49 · Expires 2029-02-19 | Direct | 180,000 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 8
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 8 · Balance 180,000 |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $56.44 · Expires 2028-02-20 | Direct | 90,000 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 9
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 9 · Balance 90,000 |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $64.43 · Expires 2032-02-22 | Direct | 185,254 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 10
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 10 · Balance 185,254 |
| Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $90.50 · Expires 2031-02-16 | Direct | 123,521 |
Reported balance
Holding disclosure · report date 2026-02-18 · row 11
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 11 · Balance 123,521 |
Filing footnotes · ownership attribution and instrument terms
F1: The reporting person is a trustee and beneficiary of Willett Parkhill Investment Trust dated August 2, 2010. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.
F2: This disposition represents shares withheld to satisfy tax withholding obligations on the restricted stock units that vested on February 18, 2026 and are reported herein.
F3: The restricted stock units vest approximately 20%, 30%, and 50% on the first, second, and third anniversaries of the grant date (February 18, 2025), respectively.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 08, 2017 Filed May 10, 2017 15:20 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionCommon Stock | 20,020 | $12.38 | $247,847.60 |
DisclosureSEC source: 0001438093-17-000004 · edgardoc.xml · nonDerivative · entry 1 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 20,020 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 04, 2017 Filed May 8, 2017 13:24 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 100 | $0.00 Strike: $12.38 | $0.00 |
DisclosureSEC source: 0001438093-17-000003 · edgardoc.xml · derivative · entry 3 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 99,900 Underlying: Common Stock · 100 shares Expires 2021-03-18 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 04, 2017 Filed May 8, 2017 13:24 UTC | COGNEX CORP CGNX · Entity 3527 | SaleCommon Stock | 100 | $89.64 | $8,964.00 |
DisclosureSEC source: 0001438093-17-000003 · edgardoc.xml · nonDerivative · entry 2 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Read SEC document |
| May 04, 2017 Filed May 8, 2017 13:24 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionCommon Stock | 100 | $12.38 | $1,238.00 |
DisclosureSEC source: 0001438093-17-000003 · edgardoc.xml · nonDerivative · entry 1 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 100 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| March 06, 2017 Filed Mar 7, 2017 14:27 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 50,000 | $0.00 Strike: $12.38 | $0.00 |
DisclosureSEC source: 0001438093-17-000002 · edgardoc.xml · derivative · entry 3 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 100,000 Underlying: Common Stock · 50,000 shares Expires 2021-03-18 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| March 06, 2017 Filed Mar 7, 2017 14:27 UTC | COGNEX CORP CGNX · Entity 3527 | SaleCommon Stock | 50,000 | $80.69 | $4,034,370.00 |
DisclosureSEC source: 0001438093-17-000002 · edgardoc.xml · nonDerivative · entry 2 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Read SEC document |
| March 06, 2017 Filed Mar 7, 2017 14:27 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionCommon Stock | 50,000 | $12.38 | $619,000.00 |
DisclosureSEC source: 0001438093-17-000002 · edgardoc.xml · nonDerivative · entry 1 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 50,000 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| February 27, 2017 Filed Mar 1, 2017 16:50 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 50,000 | $0.00 Strike: $12.38 | $0.00 |
DisclosureSEC source: 0001438093-17-000001 · edgardoc.xml · derivative · entry 3 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 150,000 Underlying: Common Stock · 50,000 shares Expires 2021-03-18 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| February 27, 2017 Filed Mar 1, 2017 16:50 UTC | COGNEX CORP CGNX · Entity 3527 | SaleCommon Stock | 50,000 | $77.75 | $3,887,615.00 |
DisclosureSEC source: 0001438093-17-000001 · edgardoc.xml · nonDerivative · entry 2 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Read SEC document |
| February 27, 2017 Filed Mar 1, 2017 16:50 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionCommon Stock | 50,000 | $12.38 | $619,000.00 |
DisclosureSEC source: 0001438093-17-000001 · edgardoc.xml · nonDerivative · entry 1 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 50,000 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| February 21, 2017 Filed Feb 23, 2017 19:14 UTC | COGNEX CORP CGNX · Entity 3527 | GrantNon-Qualified Stock Option (right to buy) · Derivative | 90,000 | $0.00 Strike: $76.78 | $0.00 |
DisclosureSEC source: 0001401616-17-000007 · edgardoc.xml · derivative · entry 1 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 90,000 Underlying: Common Stock · 90,000 shares Expires 2027-02-21 Read SEC document |
| November 14, 2016 Filed Nov 15, 2016 16:24 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 50,000 | $0.00 Strike: $15.34 | $0.00 |
DisclosureSEC source: 0001438093-16-000002 · edgardoc.xml · derivative · entry 6 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 50,000 shares Expires 2021-02-14 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 14, 2016 Filed Nov 15, 2016 16:24 UTC | COGNEX CORP CGNX · Entity 3527 | SaleCommon Stock | 50,000 | $56.82 | $2,840,880.00 |
DisclosureSEC source: 0001438093-16-000002 · edgardoc.xml · nonDerivative · entry 4 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Read SEC document |
| November 14, 2016 Filed Nov 15, 2016 16:24 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionCommon Stock | 50,000 | $15.34 | $766,750.00 |
DisclosureSEC source: 0001438093-16-000002 · edgardoc.xml · nonDerivative · entry 3 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 50,000 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 11, 2016 Filed Nov 15, 2016 16:24 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 50,000 | $0.00 Strike: $15.34 | $0.00 |
DisclosureSEC source: 0001438093-16-000002 · edgardoc.xml · derivative · entry 5 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 50,000 Underlying: Common Stock · 50,000 shares Expires 2021-02-14 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| November 11, 2016 Filed Nov 15, 2016 16:24 UTC | COGNEX CORP CGNX · Entity 3527 | SaleCommon Stock | 50,000 | $54.57 | $2,728,445.00 |
DisclosureSEC source: 0001438093-16-000002 · edgardoc.xml · nonDerivative · entry 2 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Read SEC document |
| November 11, 2016 Filed Nov 15, 2016 16:24 UTC | COGNEX CORP CGNX · Entity 3527 | Exercise / conversionCommon Stock | 50,000 | $15.34 | $766,750.00 |
DisclosureSEC source: 0001438093-16-000002 · edgardoc.xml · nonDerivative · entry 1 Willett Robert · CIK 0001438093 · CEO& President 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 50,000 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.