Blackstone Holdings III L.P.
CIK 1404073 · last filed 2025-05-28
Blackstone Holdings III L.P. is a corporate insider who has filed 39 SEC Form 4 insider transactions across 25 companies since 2010. The most recent filing, for TASK, was dated May 28, 2025. Across all open-market trades the lifetime net is −$31.31B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.48B across reported positions. The firm reports its address in New York, NY. 387 SEC filings were submitted jointly with Blackstone Holdings III GP L.P.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$3.48B
Companies
25
Total Filings
39
Lifetime Open-Market Net
-$31.31B
Filer Profile
Reported Address
C/O BLACKSTONE INC.345 PARK AVENUE
NEW YORK, NY 10154
Phone
(212) 583-5000
State of Incorporation
DE
Related Filers
Blackstone Holdings III GP L.P. — 387 joint filings, latest 2026-06-18
Blackstone Holdings III GP Management L.L.C. — 377 joint filings, latest 2026-06-04
Blackstone Inc. — 365 joint filings, latest 2026-06-04
STEPHEN A SCHWARZMAN — 353 joint filings, latest 2026-06-04
Blackstone Group Management L.L.C. — 350 joint filings, latest 2026-06-04
Blackstone Holdings II L.P. — 46 joint filings, latest 2026-02-27
BTOA L.L.C. — 43 joint filings, latest 2026-06-18
BMA V L.L.C. — 41 joint filings, latest 2022-03-29
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses.
View filings on SEC EDGAR.
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TASK | 10%+ Owner | 10,094,674 | $8.14 | $82.17M | $0 | 1 | 2025-05-28 |
| KNTK | 10%+ Owner | 10,256,208 | $54.75 | $561.53M | $0 | 1 | 2024-10-28 |
| BX | — | $128.51 | — | $0 | 1 | 2023-09-12 | |
| CVENT HOLDING CORP. (CVT) Delisted | 0 | $8.52 | $0 | -$229.50M | 1 | 2023-06-15 | |
| CQP | 10%+ Owner | 16,856 | $67.74 | $1.14M | $20.94M | 2 | 2023-03-29 |
| ALIT | 10%+ Owner | 4,155 | $11.96 | $49.7K | -$507.33M | 1 | 2022-12-16 |
| VNOM | 10%+ Owner | 1,152,185 | $44.71 | $51.51M | -$60.56M | 4 | 2022-06-06 |
| Vivint Smart Home, Inc. (VVNT) Delisted | 10%+ Owner | 4,216 | $12.00 | $50.6K | $0 | 1 | 2022-06-03 |
| EXE | 10%+ Owner | 1,165,899 | $94.83 | $110.56M | -$34.48M | 4 | 2022-05-27 |
| GTES | 10%+ Owner | 100,580,217 | $26.04 | $2.62B | -$2.88B | 3 | 2021-03-04 |
| Vivint Smart Home, Inc. (VVNT.WS) Delisted | 10%+ Owner | 88,189,716 | — | — | $0 | 1 | 2020-02-28 |
| CROX | 10%+ Owner | 0 | $112.48 | $0 | -$243.97M | 1 | 2019-11-04 |
| EARN | 10%+ Owner | 2,900,249 | $4.32 | $12.53M | $6.93M | 2 | 2018-05-29 |
| Extended Stay America, Inc. (STAY) Delisted | 10%+ Owner | 2,348,943 | $20.46 | $48.06M | -$2.81B | 2 | 2017-03-14 |
| PFGC | 10%+ Owner | 30,095 | $93.94 | $2.83M | -$1.84B | 1 | 2017-03-03 |
| Catalent, Inc. (CTLT) Delisted | 10%+ Owner | 17,100,705 | $63.48 | $1.09B | -$2.15B | 1 | 2016-06-13 |
| Michaels Companies, Inc. (MIK) Delisted | 10%+ Owner | 11,088,414 | $21.97 | $243.61M | -$3.72B | 2 | 2015-07-15 |
| PINNACLE FOODS INC. (PF) Delisted | 10%+ Owner | 3,308 | — | — | -$5.93B | 2 | 2015-03-17 |
| BRX | 10%+ Owner | 174 | $28.73 | $5.0K | -$4.55B | 1 | 2015-01-21 |
| BXMT | 10%+ Owner | 2,460,784 | $13.35 | $32.85M | $300.00M | 1 | 2013-05-30 |
| KOS | 10%+ Owner | 2,816,074 | $3.02 | $8.50M | -$1.04B | 1 | 2013-02-25 |
| TMH | 10%+ Owner | 0 | $50.75 | $0 | -$2.87B | 1 | 2013-02-20 |
| KNIGHT CAPITAL GROUP, INC. (KCG) Delisted | 10%+ Owner | — | — | — | $0 | 1 | 2012-09-18 |
| Nielsen Holdings plc (NLSN) Delisted | 10%+ Owner | 756,230 | $27.98 | $21.16M | -$1.02B | 1 | 2012-03-28 |
| ZF TRW AUTOMOTIVE HOLDINGS CORP (TRW) Delisted | 10%+ Owner | 19,488,416 | — | — | -$1.75B | 1 | 2010-11-17 |
Recent Filings
39 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-05-28 | TASK | Conv (C) | +60,568,044 | $0 | EDGAR |
| 2024-10-28 | KNTK | Conv (C) | +3,354 | $0 | EDGAR |
| 2023-09-12 | BX | — | — | $0 | EDGAR |
| 2023-06-15 | CVENT HOLDING CORP. (CVT) Delisted | Sell (S) | −27,000,000 | -$229.50M | EDGAR |
| 2023-03-29 | CQP | Mixed | +454,554 | $20.94M | EDGAR |
| 2022-12-16 | ALIT | Mixed | −63,415,680 | -$507.33M | EDGAR |
| 2022-06-06 | VNOM | Sell (S) | −507,300 | -$17.43M | EDGAR |
| 2022-06-03 | Vivint Smart Home, Inc. (VVNT) Delisted | Other (J) | −1,493,850 | $0 | EDGAR |
| 2022-06-02 | VNOM | Sell (S) | −385,518 | -$12.80M | EDGAR |
| 2022-05-27 | EXE | Sell (S) | −150,000 | -$15.08M | EDGAR |
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.