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Public ownership evidence

Spok Holdings, Inc (SPOK) Ownership Disclosures

Read SPOK insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-11-042026-11-02SHOCKLEY BRETT AS1,471Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-11-02 and its public availability date is 2026-11-04. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001108720-26-000006 ↗SEC 0001108720-26-000006 ↗SEC 0001193125-26-412439 ↗

Recent Form 4 activity

Inspect all 15 displayed rows: Recent Form 4 activity

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2026-11-042026-11-02SHOCKLEY BRETT AS1,471Not reported
2026-11-042026-11-02SHOCKLEY BRETT AS14,774Not reported
2026-10-022026-10-01Stein Todd JA0Not reported
2026-10-022026-10-01Stein Todd JA0Not reported
2026-10-022026-10-01Stein Todd JA2,383Not reported
2026-10-022026-10-01Hyun RandyA2,383Not reported
2026-10-022026-10-01SHOCKLEY BRETT AA2,383Not reported
2026-10-022026-10-01Byrne Barbara PetersonA2,383Not reported
2026-10-022026-10-01Byrne Barbara PetersonA0Not reported
2026-10-022026-10-01COURNOYER CHRISTINEA2,383Not reported
2026-10-022026-10-01COURNOYER CHRISTINEA0Not reported
2026-08-122026-08-10Woods-Keisling SharonS20,000Not reported
2026-08-122026-08-10Woods-Keisling SharonS0Not reported
2026-08-122026-08-10COURNOYER CHRISTINES8,320Not reported
2026-08-122026-08-10COURNOYER CHRISTINES0Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2025-12-312026-08-29105$1,385None
CARLSON FINANCIAL, INC.2025-12-312026-08-2511,233$148,153None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25286$2,929None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-252,929$286,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2015,330$156,980None
Empowered Funds, LLC2026-06-302026-08-1815,119$154,819None
UNITED CAPITAL FINANCIAL ADVISORS, LLC2026-06-302026-08-18194,815$1,994,906None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-1820,788$212,869None
Basecamp Wealth Advisors LLC2026-06-302026-08-154$41None
CSM Advisors, LLC2026-06-302026-08-15212,910$2,179,000None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-1569,857$715,336None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-1569,857$715,336None
Qube Research & Technologies Ltd2026-06-302026-08-15287,617$2,945,198None
IFG Advisory, LLC2026-06-302026-08-152,231$22,845None
Caption Management, LLC2026-06-302026-08-1560,000$614,400Call
OSAIC HOLDINGS, INC.2026-06-302026-08-156,042$61,862None
Schonfeld Strategic Advisors LLC2026-06-302026-08-1524,450$250,366None
Man Group plc2026-06-302026-08-1557,712$590,971None
Trexquant Investment LP2026-06-302026-08-1539,184$401,244None
MetLife Investment Management, LLC2026-06-302026-08-1511,276$115,466None
JANE STREET GROUP, LLC2026-06-302026-08-153,534$36,188None
JANE STREET GROUP, LLC2026-06-302026-08-1511,659$119,388None
Uniplan Investment Counsel, Inc.2026-06-302026-08-15215,764$2,209,424None
Legal & General Group Plc2026-06-302026-08-151,851$18,954None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1513,927$142,612None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1522,380$229,171None
Numerai GP LLC2026-06-302026-08-1546,223$473,324None
Atom Investors LP2026-06-302026-08-1544,289$453,519None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-15202$2,151None
AMERIPRISE FINANCIAL INC2026-06-302026-08-152,446$25,047None
AMERIPRISE FINANCIAL INC2026-06-302026-08-1536,568$374,456None
Cambria Investment Management, L.P.2026-06-302026-08-1525,586$262,001None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-151$10None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1512$123None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1570$717None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1543,837$448,893None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15609$6,236None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-158$82None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15450$4,608None
ROYAL BANK OF CANADA2026-06-302026-08-151,926$20,000None
ROYAL BANK OF CANADA2026-06-302026-08-15622$6,000None
ALLIANCEBERNSTEIN L.P.2026-06-302026-08-1527,860$303,674None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-1534,600$354,304None
CANADA PENSION PLAN INVESTMENT BOARD2026-06-302026-08-1515,200$155,648None
D. E. Shaw & Co., Inc.2026-06-302026-08-15106,919$1,094,851None
D. E. Shaw & Co., Inc.2026-06-302026-08-1523,244$238,019None
CITADEL ADVISORS LLC2026-06-302026-08-15183,447$1,878,497None
Larson Financial Group LLC2026-06-302026-08-152,000$20,480None
Point72 Asset Management, L.P.2026-06-302026-08-1519,105$195,635None
Invesco Ltd.2026-06-302026-08-1522,470$230,093None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗CARLSON FINANCIAL, INC. ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗MERCER GLOBAL ADVISORS INC /ADV ↗Empowered Funds, LLC ↗UNITED CAPITAL FINANCIAL ADVISORS, LLC ↗PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO ↗Basecamp Wealth Advisors LLC ↗CSM Advisors, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.