Altimeter Capital Management, LP
Multi-stage venture firm, based in Boston, Massachusetts, reporting $6.6B of fund assets on its funds' Form ADV filings.
Composed from this organization's classification, location and filed figures.
2 additional team members, 13 additional co-investors and affiliates, 39 additional investments, funds and LPs, 37 events, 4 verified contacts (2 general firm email, 2 firm phone)
Every relationship, signal and contact on this record, with the source on each.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
What matters now
- 6 vehicleson Form D, 18 months
$3.74B reported sold so far.
A Form D is filed when a vehicle takes its first money, so these are open to LPs now.
- 3 companiesnew in 12 months
3 new companies in the last 12 months.
A firm writing cheques this quarter is one a founder can pitch now.
- 1 companyportfolio raising
One portfolio company has new financing on record in 6 months without this firm named on the round; the latest on 19 Aug 2026 ($1B round).
A portfolio company raising again is a follow-on decision for the firm and a co-investment opening for others.
- 1 roundled by Erik Kriessmann
Erik Kriessmann leads the most rounds on record: 1 round, latest Castelion Series B (5 Dec 2025).
The partner who leads is the one to reach; the rest of the team follows a lead partner's call.
- 2 dealswith Lightspeed Venture Partners
Invests most often alongside Lightspeed Venture Partners (2 shared deals) and Washington Harbour Partners (2 shared deals).
pair last observed on record 30 Jul 2026, not a deal date · The firms it syndicates with are the likeliest to see the same deals and to fill out its rounds.
People to know
View all people- Chief Financial Officer / Managing PartnerWhy: Managing partner: runs the firmNo route on file yet
- PartnerWhy: Partner: part of the investment decisionNo route on file yet
- Managing MemberWhy: Named with investment responsibilityNo route on file yet
Relationship network
63 connected entities4 observed rounds1 repeat counterparty3 dated rounds shown here, 2025 to 2026
From financing rounds and every investor named in them, Form ADV and Form D filings, the firm's funds and team, and disclosed LP commitments in the venture capital graph. A round's amount is the size of the round, not money that moved between two investors.
Some relationships on this record are counted rather than named here. They open with the full profile.
Click any name or line for the rounds and sources behind it. Line weight is rounds together; dashed lines are inferred.
- Sponsor
- Company
- Fund or vehicle
- Person
›How strength and recency are read
Co-investors are read from the rounds: three or more shared rounds is a strong observed relationship, two a repeat co-investor, one a single round. Funds and people are structural. Nothing is scored that a reader cannot check.
Darker lines were active in the last 24 months or are current; lighter lines are older or undated.
How am I connected?
Name your firm, a company or a person, and DFX finds the published routes to Altimeter Capital Management, LP: a shared portfolio company or board, a prior employer, a co-investor, a shared LP or service provider. Every step is a filed or published record with its source; none is a guess about who knows whom.
See how you connect to Altimeter Capital Management, LP
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Investing
4 companies on record, 3 new in 12 months
Investments on record
What these amounts mean“This investor” is the amount disclosed for this investor alone; it is unknown unless a source said it. The round size is the whole round.Acquired, Public, Exited and Active are what the firm’s own portfolio card says, read on the date shown when you hover the chip; they are not deal dates. A company with no chip is one whose card states no outcome: DFX does not assume it is active.| Company | Round | Role | Partner | Round size | This investor | Date | Source |
|---|---|---|---|---|---|---|---|
| K2 Space | Series D · Series D+ | participant | unknown | $500M | unknown | Jul 30, 2026 | Fact Press release |
| Vulcan Elements Holdings Corp. | board seat | unknown · board | Erik Kriessmann (strongly supported) | unknown | unknown | Apr 2, 2026 | Inference Form D |
| Castelion Corp | Series B · Series B | lead | Erik Kriessmann (confirmed) | $350M | unknown | Dec 5, 2025 | Fact Press release |
Stated thesis versus observed behaviour
- Sectors
- media
- Stages
- multi stage
- Geography
- boston, silicon valley
- Check size
- not stated; DFX does not estimate checks from round sizes
Team
5 current, 2 departed
Decision makers
- John James Kiernan · Chief Financial Officer / Managing PartnerWhy this person: Managing partner: runs the firm; Named with investment responsibility
- Erik Kriessmann · PartnerWhy this person: Partner: part of the investment decision; Named with investment responsibility; Led 1 round on record
Ranked by the role the firm or its filing states, a route on file and deals led. Every reason is read from the record, never inferred. Routes are published by the person or the firm (their bio, the team page or a filing) and are revealed on a plan; data bought from a provider is never shown, and a route printed at a firm the person has since left is held back.
Investment team
How the team is orderedPartners who lead rounds first (rounds led, then deals attributed, then seniority), then the rest of the investment team, then investor relations, finance and operations. A person named by two sources under two spellings is shown once.- Managing Member · 1 deal attributed
- Partner · led 1 round on record
- Chief Financial Officer / Managing Partner
2 departed (kept with end dates)
- Ehab Siam · General Counsel · Mar 1, 2016 to Jan 2, 2024 Inference
- Mara Nicole Davis · Chief Compliance Officer · Apr 1, 2021 to Mar 31, 2026 Fact
Contacts
2 general firm email, 2 firm phone on record, each with its source. Values open with the complete profile.
Funds and LPs
36 vehicles, 0 LPs disclosed
Funds and vehicles
What these amounts meanGAV is the gross asset value the adviser reported on Form ADV for the vehicle, never the fund’s committed size and never dry powder. Form D sold is the amount sold as of the latest filing, never a final close.| Vehicle | Type | Vintage | Lifecycle | Reported GAV | Owners | Form D sold | Latest Form D |
|---|---|---|---|---|---|---|---|
| Altimeter Premier Growth Expansion Fund, L.P. | Growth fund | 2026 form d first sale | Newly closed | unknown | unknown | $1.5B of $1.5B | Jun 23, 2026 |
| Altimeter Himalaya Fund I, L.P. | Fund | 2026 form d first sale | Newly closed | unknown | unknown | $40.0M of $40.0M | Jul 14, 2026 |
| Altimeter Adirondack Fund II, L.P. | Fund | 2026 form d first sale | Newly closed | unknown | unknown | $168M of $168M | Feb 9, 2026 |
Limited partners
Known LPs and allocators
What these amounts and dates areEach commitment is counted once across the pension tape and the allocator graph. A commitment date prints only when the source printed one; otherwise the row carries the report date. A foundation’s 990-PF line is a holding at fair value, never a commitment. Rows without a fund on the venture graph are commitments to this manager.| Allocator | Type | Fund | Amount | Date | Source |
|---|---|---|---|---|---|
| Hillman Family Foundations | FOUNDATION | Altimeter Growth Partners Fund V, L.P. | $10.2M fair value on the foundation's return | reported as of Dec 31, 2024 | Fact IRS Form 990 / 990-PF e-file returns |
| Michael & Susan Dell Foundation | FOUNDATION | Altimeter Growth Partners Fund VI, L.P. | $5.5M fair value on the foundation's return | reported as of Dec 31, 2024 | Fact IRS Form 990 / 990-PF e-file returns |
| Hillman Family Foundations | FOUNDATION | Altimeter Growth Partners Fund IV, L.P. | $10.2M fair value on the foundation's return | reported as of Dec 31, 2024 | Fact IRS Form 990 / 990-PF e-file returns |
Relationships across DFX
16 co-investors · on 4 other DFX graphs
Co-investors
- 2026-07-302 shared deals · recurring · they led 1 · this firm led 1
- 2026-04-022 shared deals · recurring
- 2026-07-301 shared deal · one time
Across DFX and the capital chainon 4 other DFX graphs · 3 capital paths ShowHide
- The same institution is held on Allocators, RIA and Wealth, Private Equity, Private Credit, matched by identifier. See which records
Altimeter Capital Management, LP is the same institution as 4 records in Allocators, RIA and Wealth, Private Equity and Private Credit.
DFX found 4 relationships across 4 datasets
Which record it is in each graph, what it is called there, and how the two were matched.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Checking your plan…
Altimeter Capital Management, LP sits on 3 traced paths of capital across the graphs.
DFX traced 3 paths of capital through this record
Every record on each path, what it committed or lent, and as of when.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Derived from allocator disclosures, BDC schedules and SEC filings; confidence is the weakest hop.
Checking your plan…
Evidence and history
42 dated events, 140 observations from 4 sources
Timeline
- Aug 20, 2026Altimeter Premier Growth VIII, L.P.: the Form D filed 2026-08-20 reports the offering fully sold ($1.56B of $1.56B, 177 investors); a final close is inferred
- Mar 31, 2026Mara Nicole Davis (Chief Compliance Officer) no longer on Schedule A of Altimeter Capital Management, LP
- Mar 31, 2026Altimeter Adirondack Fund I, L.P. first reported on Form ADV by Altimeter Capital Management, LP (Venture Capital Fund), GAV $149,960,626
- Mar 31, 2026Altimeter Growth Co-Invest IV, L.P. first reported on Form ADV by Altimeter Capital Management, LP (Venture Capital Fund), GAV $110,776,123
- Mar 31, 2026Altimeter Growth Co-Invest VI, L.P. first reported on Form ADV by Altimeter Capital Management, LP (Venture Capital Fund), GAV $45,840,891
Identity and regulatory footprint
Address, phone, Form ADV filing and ownersForm ADV filed Mar 31, 2026 · 33 private fundsShowHide
- Headquarters
- Menlo Park, CAadviserinfo.sec.gov
- Office address
- unknownadviserinfo.sec.gov
- Business phone
- unknownadviserinfo.sec.gov
- Website
- ALTIMETER.COM
- SEC adviser type
- Registered investment adviseradviserinfo.sec.gov
- SEC exemption claimed
- unknown
- Latest Form ADV
- Mar 31, 2026
- Private funds reported
- 33 (31 venture capital funds)adviserinfo.sec.gov
- Private fund gross assets, adviser total
- $18Badviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
- Regulatory AUM
- $19Bthe adviser's RAUM, a regulatory measure, never a fund size
- Employees
- 35
- Owners on Schedule A
- Altimeter Capital Management General Partner LLC (General Partner), owns under 5%
Classification history
Classification history
Every classification this record has carried4 on recordShowHide
- Sep 29, 2026Multi-stage venture firm (probable, 80%)Both early and growth/opportunity families, reported GAV $6.8B
- Sep 23, 2026Multi-stage venture firm (probable, 80%)Both early and growth/opportunity families, reported GAV $5.0B
- Sep 15, 2026Multi-stage venture firm (probable, 80%)Both early and growth/opportunity families, reported GAV $4.5B
- Sep 12, 2026Multi-stage venture firm (probable, 80%)Both early and growth/opportunity families, reported GAV $4.4B
Evidence
Every observation behind this profile, with its source, date and class
| Fact | Value | Effective | Class | Source |
|---|---|---|---|---|
| Why admitted | VC funds reported | Mar 31, 2026 | Fact | Form ADV |
| SEC adviser type | Registered investment adviser | Mar 31, 2026 | Fact | Form ADV |
| SEC adviser type | Registered investment adviser | Mar 31, 2026 | Fact | Form ADV |
| SEC adviser type | Registered investment adviser | Mar 30, 2024 | Fact | Form ADV |
| First Form ADV filing | 2012-02-13 | Mar 31, 2026 | Fact | Form ADV |
| First Form ADV filing | 2012-02-13 | Mar 30, 2024 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-30 | Oct 1, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-29 | Sep 30, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-25 | Sep 26, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-23 | Sep 24, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-21 | Sep 23, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-22 | Sep 23, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1 | Sep 12, 2026 | Fact | Form ADV |
| Latest Form ADV filing | 2026-03-31 | Mar 31, 2026 | Fact | Form ADV |
| Latest Form ADV filing | 2026-03-31 | Mar 31, 2026 | Fact | Form ADV |
| Latest Form ADV filing | 2024-03-30 | Mar 30, 2024 | Fact | Form ADV |
| SEC status | Approved | Mar 31, 2026 | Fact | Form ADV |
| SEC status effective | 2012-03-30 | Mar 31, 2026 | Fact | Form ADV |
| Venture share of reported funds | 1 | Mar 31, 2026 | Fact | Form ADV |
| Venture share of reported funds | 1 | Mar 30, 2024 | Fact | Form ADV |
| Business phone | Mar 31, 2026 | Fact | Form ADV | |
| Business phone | Mar 30, 2024 | Fact | Form ADV | |
| Employees | 35 | Mar 31, 2026 | Fact | Form ADV |
| Employees | 26 | Mar 30, 2024 | Fact | Form ADV |
| Headquarters | Menlo Park, CA | Mar 31, 2026 | Fact | Form ADV |
| Headquarters | Boston, MA | Mar 30, 2024 | Fact | Form ADV |
| Office address | Mar 31, 2026 | Fact | Form ADV | |
| Office address | Mar 30, 2024 | Fact | Form ADV | |
| Legal form | Limited Partnership | Mar 31, 2026 | Fact | Form ADV |
| Private funds reported | 33 | Mar 31, 2026 | Fact | Form ADV |
| Private funds reported | 33 | Mar 31, 2026 | Fact | Form ADV |
| Private funds reported | 19 | Mar 30, 2024 | Fact | Form ADV |
| Private fund gross assets (reported) | $18B | Mar 31, 2026 | Fact | Form ADV |
| Private fund gross assets (reported) | $18B | Mar 31, 2026 | Fact | Form ADV |
| Private fund gross assets (reported) | $11B | Mar 30, 2024 | Fact | Form ADV |
| Regulatory AUM (adviser, not fund size) | $19B | Mar 31, 2026 | Fact | Form ADV |
| Regulatory AUM (adviser, not fund size) | $11B | Mar 30, 2024 | Fact | Form ADV |
| Schedule a diff | sadiff-1 | Mar 31, 2026 | Fact | Form ADV |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 30, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 29, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 28, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 27, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 26, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 25, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 24, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 23, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 22, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 21, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 20, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 19, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 18, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 17, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 16, 2026 | Fact | |
| Stated geography | Boston, silicon valley “geography words on the home page” | Sep 13, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 30, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 29, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 28, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 27, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 26, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 25, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 24, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 23, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 22, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 21, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 20, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 19, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 18, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 17, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 16, 2026 | Fact | |
| Stated sectors | media “sector words on the home page” | Sep 13, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 30, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 29, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 28, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 27, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 26, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 25, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 24, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 23, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 22, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 21, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 20, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 19, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 18, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 17, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 16, 2026 | Fact | |
| Stated stages | Multi stage “stage words on the home page” | Sep 13, 2026 | Fact | |
| Venture funds reported | 31 | Mar 31, 2026 | Fact | Form ADV |
| Venture funds reported | 31 | Mar 31, 2026 | Fact | Form ADV |
| Venture funds reported | 17 | Mar 30, 2024 | Fact | Form ADV |
| Website | Mar 30, 2024 | Fact | Form ADV | |
| Site title | Sep 30, 2026 | Fact | ||
| Site title | Sep 29, 2026 | Fact | ||
| Site title | Sep 28, 2026 | Fact | ||
| Site title | Sep 27, 2026 | Fact | ||
| Site title | Sep 26, 2026 | Fact | ||
| Site title | Sep 25, 2026 | Fact | ||
| Site title | Sep 24, 2026 | Fact | ||
| Site title | Sep 23, 2026 | Fact | ||
| Site title | Sep 22, 2026 | Fact | ||
| Site title | Sep 21, 2026 | Fact | ||
| Site title | Sep 20, 2026 | Fact | ||
| Site title | Sep 19, 2026 | Fact | ||
| Site title | Sep 18, 2026 | Fact | ||
| Site title | Sep 17, 2026 | Fact | ||
| Site title | Sep 16, 2026 | Fact | ||
| Site title | Sep 13, 2026 | Fact |
How this is scored
Scores, classification basis and filing advisersMulti-stage venture firm, probableShowHide
Both early and growth/opportunity families, reported GAV $6.8B
- importance
- gav: 0.85 · funds: 1 · people: 0.2 · investments: 0.26 · co investors: 0.49
- active deployment
- investments 12m: 0.38 · fund raising 18m: 1 · people joined 12m: 0 · vintage within 3y: 1 · latest investment at: 2026-07-30
- emerging manager
- fund count: 38 · reported gav: $6.6B · first adv filing: 2012-02-13 · years since first filing: 14.6
Fits, record history and connections
scored matches for this investor, every identity change, every edge
Fits
- score 64.2confidence 100%Why: sector fit; stage fit; activity; analogousWatch: adjacent portfolio
- score 51.7confidence 100%Why: sector fit; geography fit; activity; analogousWatch: adjacent portfolio
- score 47.7confidence 100%Why: sector fit; geography fit; activity; analogousWatch: adjacent portfolio
+69 more scored matches
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Scored by DFX match engines from the record's observed portfolio, stage, geography and recent activity. A fit is a reason to look, not a mandate; the blockers say what the model could not confirm. Names and the evidence sentences show with the names on this page.
Record history
- Merged in2026-09-14
- Adviser's first ADV filing2012-02-13source on record
The ledger records every merge, rename and reclassification this record went through and the dated filings observed on it, so the identity on this page can be traced to the records it was built from. The ledger's own sentences name other records, so they show with the names.