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OBRIEN WILLIAM K

Disclosed activity across 1 company

Tapewire entity
122816
SEC CIK
0001187425

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
MERCURY SYSTEMS INCMRCY · Entity 3908DirectorOctober 26, 2022October 28, 2022

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.

MERCURY SYSTEMS INC

Report date October 26, 2022 · Filed October 28, 2022

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect13,100 Reported balance After 2022-10-26 transaction · row 1
1 source row

Row 1 · 2022-10-26 · Grant · Acquired 3,976 · Balance 13,100

F1: These shares of restricted stock vest at 100% on the first anniversary of the grant date.

Common StockSEC Table I · non-derivativeIndirectPower of Attorney53,991 Reported balance Holding disclosure · report date 2022-10-26 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 53,991

Filing footnotes · ownership attribution and instrument terms

F1: These shares of restricted stock vest at 100% on the first anniversary of the grant date.

Transaction history

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Purchases/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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 26, 2022 Filed Oct 28, 2022 17:29 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GrantCommon Stock 3,976 $0.00 $0.00
Disclosure

SEC source: 0001562180-22-007359 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,100

F1 · shares: These shares of restricted stock vest at 100% on the first anniversary of the grant date.

Read SEC document
October 27, 2021 Filed Oct 29, 2021 19:14 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GrantCommon Stock 3,518 $0.00 $0.00
Disclosure

SEC source: 0001562180-21-006689 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,124

F1 · shares: These shares of restricted stock vest at 100% on the first anniversary of the grant date.

Read SEC document
October 28, 2020 Filed Oct 30, 2020 14:11 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GrantCommon Stock 1,950 $0.00 $0.00
Disclosure

SEC source: 0001562180-20-006460 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,606

F1 · shares: These shares of restricted stock vest at 100% on the first anniversary of the grant date.

Read SEC document
December 12, 2019 Filed Aug 17, 2020 13:13 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GiftCommon Stock 2,666 $70.72 $188,539.52
Disclosure

SEC source: 0001562180-20-005452 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,647

Read SEC document
October 23, 2019 Filed Oct 25, 2019 16:52 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GrantCommon Stock 1,961 $0.00 $0.00
Disclosure

SEC source: 0001562180-19-005251 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,322

F1 · shares: These shares of restricted stock vest at 100% on the first anniversary of the grant date.

Read SEC document
September 12, 2019 Filed Sep 13, 2019 14:59 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 SaleCommon Stock 1,563 $80.57 $125,931.07
Disclosure

SEC source: 0001562180-19-004791 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Power of Attorney

Disclosed balance after: 53,991

F1 · ownership.nature: Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien.

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October 24, 2018 Filed Oct 26, 2018 16:54 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GrantCommon Stock 2,892 $0.00 $0.00
Disclosure

SEC source: 0001562180-18-004294 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,361

F1 · shares: These shares of restricted stock vest in two equal installments on each of October 24, 2018 and 2019.

Read SEC document
November 28, 2017 Filed Aug 14, 2018 18:18 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GiftCommon Stock 1,937 $52.61 $101,905.57
Disclosure

SEC source: 0001562180-18-003577 · primarydocument.xml · nonDerivative · entry 3

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,023

Read SEC document
October 18, 2017 Filed Oct 20, 2017 22:11 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GrantCommon Stock 2,939 $0.00 $0.00
Disclosure

SEC source: 0001562180-17-003290 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,570

F1 · shares: These shares of restricted stock vest in two equal installments on each of October 18, 2017 and 2018.

Read SEC document
October 09, 2017 Filed Oct 11, 2017 21:48 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 Exercise / conversionStock Option (Right to Buy) · Derivative 8,000 $0.00 Strike: $14.12 $0.00
Disclosure

SEC source: 0001562180-17-003246 · primarydocument.xml · derivative · entry 3

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,000 shares

Expires 2017-10-21

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
October 09, 2017 Filed Oct 11, 2017 21:48 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 Tax withholdingCommon Stock 2,147 $52.63 $112,996.61
Disclosure

SEC source: 0001562180-17-003246 · primarydocument.xml · nonDerivative · entry 2

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,631

Read SEC document
October 09, 2017 Filed Oct 11, 2017 21:48 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 Exercise / conversionCommon Stock 8,000 $14.12 $112,960.00
Disclosure

SEC source: 0001562180-17-003246 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,778

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
December 13, 2016 Filed Aug 14, 2018 18:18 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 SaleCommon Stock 11,700 $31.63 $370,071.00
Disclosure

SEC source: 0001562180-18-003577 · primarydocument.xml · nonDerivative · entry 2

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Power of Attorney

Disclosed balance after: 58,960

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.45 to $31.86, inclusive.

F2 · ownership.direct: Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien.

F2 · ownership.nature: Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien.

Read SEC document
December 12, 2016 Filed Aug 14, 2018 18:18 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 SaleCommon Stock 19,910 $31.63 $629,753.30
Disclosure

SEC source: 0001562180-18-003577 · primarydocument.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Power of Attorney

Disclosed balance after: 70,660

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.45 to $31.86, inclusive.

F2 · ownership.direct: Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien.

F2 · ownership.nature: Although Mr. O'Brien is neither a trustee nor a beneficiary of the family trust that held these shares, he holds a power of attorney to dispose of the shares and accordingly these shares are reported as being indirectly beneficially owned by Mr. O'Brien.

Read SEC document
December 09, 2016 Filed Aug 2, 2017 18:15 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GiftCommon Stock 2,392 $31.43 $75,180.56
Disclosure

SEC source: 0001209191-17-047067 · doc5.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,778

Read SEC document
October 19, 2016 Filed Oct 20, 2016 18:05 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 GrantCommon Stock 4,186 $0.00 $0.00
Disclosure

SEC source: 0001209191-16-146455 · doc4.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,170

F1 · shares: These shares of restricted stock vest in two equal installments on each of October 19, 2016 and 2017.

Read SEC document
October 06, 2016 Filed Oct 7, 2016 17:52 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 Exercise / conversionNon-Qualified Stock Option (Right to buy) · Derivative 8,000 $0.00 Strike: $10.41 $0.00
Disclosure

SEC source: 0001209191-16-145361 · doc4.xml · derivative · entry 3

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common · 8,000 shares

Expires 2016-10-21

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.

F2 · price: Field N/A to this transaction but was completed to allow for electronic filing only.

Read SEC document
October 06, 2016 Filed Oct 7, 2016 17:52 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 Tax withholdingCommon Stock 3,391 $24.56 $83,282.96
Disclosure

SEC source: 0001209191-16-145361 · doc4.xml · nonDerivative · entry 2

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,984

F1 · shares: Net exercise of stock option to cover the exercise price.

Read SEC document
October 06, 2016 Filed Oct 7, 2016 17:52 UTC MERCURY SYSTEMS INC MRCY · Entity 3908 Exercise / conversionCommon Stock 8,000 $10.41 $83,280.00
Disclosure

SEC source: 0001209191-16-145361 · doc4.xml · nonDerivative · entry 1

OBRIEN WILLIAM K · CIK 0001187425 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,375

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.

F1 · shares: Net exercise of stock option to cover the exercise price.

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.