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Monthly release · May 2026

SpaceNexus Space Insider Activity

What company insiders and 5% holders filed with the SEC on the listed space names this month, and how much each issuer filed.

Data as of 2026-05-31 · computed 2026-11-03 · live view

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Live view

Live view, not yet a published edition: this period's edition is scheduled for 2026-06-13. Until then these figures are recomputed from current data on every visit and should not be cited as the edition.

Back-computed edition

This period closed before the release began publishing on a calendar. The figures are computed from the same tables, but this is a back-calculation rather than what we would have published at the time. Scheduled editions begin with 2026-09.

Open-market insider purchases: 17
Open-market insider sales: 155
Disclosed purchase value: $3.3M
5% holder filings: 83
Filings indexed: 478
Lines excluded from the two figures above: 425

Open-market insider purchases, May 2026

Every transaction an officer, director or 10% owner reported under code P (a purchase they chose to make in the market), largest disclosed value first.

Methodology

Every figure is a count, a sum or a difference over the InsiderTransaction, InstitutionalPosition and IssuerFiling tables, each row of which was parsed from an SEC filing document and stores that filing’s accession number and URL. No estimate, model, projection or score is used anywhere in this release.
A transaction is attributed to the month its transaction date falls in, in UTC: the date the trade happened, not the date it was reported. A line carrying no transaction date falls back to the filing date, and nothing else is inferred.
THE HEADLINE PURCHASE AND SALE FIGURES COUNT ONLY CODES P AND S: an open-market or private purchase, and an open-market or private sale. A restricted-stock grant (code A) is not a purchase and shares withheld to pay tax on it (code F) are not a sale; both are automatic events on a compensation calendar. Every other class is published in its own table with its line count, share total and disclosed value, so the exclusion can be checked rather than trusted.
Value is shares multiplied by the price the filer disclosed. A line with no price contributes nothing and is counted as undisclosed: never as a value of zero, which would drag every total down silently.

What this edition can and cannot see

Coverage limits travel with the numbers, here and in every export of them.

This edition sees 597 Form 4 and Form 5 transaction lines, 83 Schedule 13D/G holder rows and 478 indexed filings for the month, across 47 issuers we hold an EDGAR filing index for.
Of those transaction lines, 172 are open-market trades (codes P and S) and 425 are not. Only the open-market lines are counted in the purchase and sale figures. The transaction-class table publishes the rest in full so the exclusion is visible rather than asserted.
Coverage is the tracked companies that carry a ticker and resolve to an SEC filer. Foreign-listed and privately held space companies file none of these forms, so their absence from every table here says nothing about them.
A company that has since delisted keeps its filing history but drops out of the exchange ticker map, so it is covered only where we already hold its CIK. Its history stops at its last filing, which is a fact about the company rather than a gap in this release.
Schedule 13D and 13G became structured XML submissions on 2024-12-18. Earlier filings are free-text cover pages: we index them but do not parse share counts out of them, and no figure on this page is drawn from one.

Sources and licences

The same credits are written into every CSV and JSON export of this data, so a downloaded file still names its sources.

UK Companies House: Company registration data from the UK Companies House register. Contains public sector information licensed under the Open Government Licence v3.0. Open Government Licence v3.0

Cite this edition

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Citation

SpaceNexus Space Insider Activity, May 2026. SpaceNexus, data as of 2026-05-31. https://spacenexus.us/releases/space-insider-activity/2026-05. https://spacenexus.us/releases/space-insider-activity/2026-05 (retrieved 2026-11-03).

Free to cite and embed with attribution. Data updates continuously; the citation date pins your retrieval.

By SpaceNexus Data

Computed from SpaceNexus data - no model is involved in producing a release

Every figure here is arithmetic over our own rows (counts, sums, deltas and rankings), and the page and its export are built by the same code, so they cannot disagree. How this edition is computed

Code P only. A grant, an option exercise and a dividend reinvestment are all acquisitions, and none of them is a purchase; they appear in the transaction-class table instead. A blank value means the filer disclosed no price, not a price of zero.

Showing the first 10 of 17 rows. 7 more in this table, plus every column the display leaves out.

The complete row set and its CSV and JSON exports are part of a SpaceNexus Research seat. The figures above are computed from exactly the same rows, so the summary and the export can never disagree. What a Research seat covers.

Open-market insider sales, May 2026

Every transaction reported under code S (a sale in the market), largest disclosed value first.

Open-market insider sales, May 2026. Every transaction reported under code S (a sale in the market), largest disclosed value first. Showing the first 10 of 155 rows.
Date	Company	Insider	Role	Shares	Price	Value
2026-05-18	Redwire	AE RED HOLDINGS, LLC	Director	9,588,077	13.3	$127.5M
2026-05-26	Satellogic	Liberty 77 Capital L.P.	Director, 10% owner	10,000,000	9.77	$97.7M
2026-05-18	Redwire	AE RED HOLDINGS, LLC	Director	5,659,509	14.5	$82.1M
2026-05-20	Palantir Technologies	Karp Alexander C.	Director, Officer (See Remarks)	224,009	136.081	$30.5M
2026-05-20	Palantir Technologies	Cohen Stephen Andrew	Director, Officer (See Remarks)	180,187	136.081	$24.5M
2026-05-20	Palantir Technologies	Karp Alexander C.	Director, Officer (See Remarks)	122,195	136.614	$16.7M
2026-05-20	Palantir Technologies	Cohen Stephen Andrew	Director, Officer (See Remarks)	98,291	136.614	$13.4M
2026-05-20	Palantir Technologies	Sankar Shyam	Officer (See Remarks)	93,218	136.081	$12.7M
2026-05-12	General Dynamics	Burns Mark Lagrand	Officer (Executive Vice President)	33,915	345.238	$11.7M
2026-05-11	General Dynamics	Burns Mark Lagrand	Officer (Executive Vice President)	28,641	343.664	$9.8M

Code S only. Shares withheld by the issuer to cover taxes (code F) and dispositions back to the issuer (code D) are excluded: they are not sales into the market. Many code-S lines are executed under a pre-arranged Rule 10b5-1 plan adopted months earlier; the Form 4 checkbox for that is not parsed here, so this table does not distinguish them.

Showing the first 10 of 155 rows. 145 more in this table, plus every column the display leaves out.

Insider activity by company

Open-market purchases and sales per company, with the compensation flow shown separately so it is visible and never mixed in.

Insider activity by company. Open-market purchases and sales per company, with the compensation flow shown separately so it is visible and never mixed in. Showing the first 10 of 29 rows.
Company	Ticker	Purchases	Sales	Net shares	Net value	Granted shares
Rocket Lab	RKLB	0	49	-445,515	$-62.0M	14,892
Palantir Technologies	PLTR	0	36	-940,191	$-127.9M	0
Kratos Defense & Security Solutions	KTOS	0	20	-64,361	$-3.7M	70,000
Northrop Grumman	NOC	0	11	-95	$-54K	3,490
Intuitive Machines	LUNR	0	8	-283,818	$-8.4M	0
Spire Global	SPIR	0	7	-52,297	$-998K	38,106
Parsons	PSN	6	0	42,500	$2.1M	0
BWX Technologies	BWXT	0	5	-12,417	$-2.6M	0
Momentus	MNTS	5	0	5,850	$35K	216,142
General Dynamics	GD	0	4	-72,710	$-25.0M	0

Net shares and net value are purchases minus sales, over codes P and S only. Granted shares and shares withheld for tax are reported beside them and are NOT part of either net figure. A net number is an arithmetic difference between two disclosures; it is not a rating of the company.

Showing the first 10 of 29 rows. 19 more in this table, plus every column the display leaves out.

Every transaction class in the month

The full denominator: every Form 4 line we parsed, grouped by what the transaction code says happened, and marked according to whether the headline figures count it.

Every transaction class in the month. The full denominator: every Form 4 line we parsed, grouped by what the transaction code says happened, and marked according to whether the headline figures count it. 8 rows.
Class	Codes	Lines	Shares	Disclosed value	In headline
Open-market purchase	P	17	99,335	$3.3M	yes
Open-market sale	S	155	27,254,380	$543.3M	yes
Grant or award	A	117	927,921.688	$2.3M	no
Shares withheld for tax or exercise price	F	22	235,437	$24.4M	no
Derivative exercise or conversion	C, M, X	249	103,005,234.13	$60.3M	no
Disposition to the issuer	D	24	311,064.7	–	no
Gift	G	10	9,714,584	–	no
Other, as coded on the filing	J	3	7,459,500	–	no

Codes and their meanings come from the SEC Form 4 general instructions. A code outside those instructions is stored as filed and classed "other" rather than guessed at.

Schedule 13D and 13G filings, May 2026

Holders of 5% or more of a tracked company, as they reported themselves, with the change against that same holder’s previous filing on the same issuer where we hold one.

Schedule 13D and 13G filings, May 2026. Holders of 5% or more of a tracked company, as they reported themselves, with the change against that same holder’s previous filing on the same issuer where we hold one. Showing the first 10 of 83 rows.
Filed	Company	Holder	Form	% of class	Change (pts)	Shares
2026-05-15	EchoStar	Charles W. Ergen	SCHEDULE 13D/A	51	-0.3	148,681,314
2026-05-15	EchoStar	Cantey M. Ergen	SCHEDULE 13D/A	50.8	-0.2	147,197,344
2026-05-14	Moog Inc.	Moog Inc. Retirement Savings Plan	SCHEDULE 13G/A	38.3	–	1,755,855
2026-05-15	EchoStar	Telluray Holdings, LLC	SCHEDULE 13D/A	28.7	0.8	62,868,198
2026-05-15	York Space Systems	AeroEquity GP, LLC	SCHEDULE 13G	23.28	–	30,196,088
2026-05-15	York Space Systems	David H. Rowe	SCHEDULE 13G	23.28	–	30,196,088
2026-05-15	York Space Systems	Michael Robert Greene	SCHEDULE 13G	23.28	–	30,196,088
2026-05-28	Satellogic	Liberty 77 Capital L.P.	SCHEDULE 13D/A	20.3	–	32,500,000
2026-05-28	Satellogic	Liberty 77 Capital Partners L.P.	SCHEDULE 13D/A	20.3	–	32,500,000
2026-05-28	Satellogic	Liberty Capital L.L.C.	SCHEDULE 13D/A	20.3	–	32,500,000

Percent of class is the figure the filer stated; we do not recompute it against a share count of our own. A blank change means we hold no earlier filing by that holder on that issuer, which is not the same as a new position. Schedule 13D is the long form filed by holders who do not certify passive intent and 13G is the short form for passive holders and qualified institutions: that describes the FORM, not what the holder will do. Structured filings only, from 2024-12-18.

Showing the first 10 of 83 rows. 73 more in this table, plus every column the display leaves out.

Filing cadence by issuer

How much each covered issuer filed this month, against its own trailing monthly average, with late-filing notifications and periodic-report lag.

Filing cadence by issuer. How much each covered issuer filed this month, against its own trailing monthly average, with late-filing notifications and periodic-report lag. Showing the first 10 of 45 rows.
Company	Filings	8-K	Trailing 8-K/mo	Above average	First seen
HawkEye 360	44	2	0	2	3; 4; 4/A; 424B4; 8-A12B; 8-K; CERT; EFFECT; S-8; SCHEDULE 13G
Rocket Lab	32	4	1.33	2.67	–
Kratos Defense & Security Solutions	25	2	0.83	1.17	S-8
Momentus	23	3	2.42	0.58	4/A
Spire Global	21	3	1.17	1.83	S-1/A
L3Harris Technologies	21	1	1	0	3
Booz Allen Hamilton	20	2	1	1	–
Leidos	19	2	0.92	1.08	S-8
BWX Technologies	18	2	1.08	0.92	–
Redwire	17	3	1.55	1.45	–

The trailing average is computed over the months we actually hold filings for that company, printed beside it as months of prior history: dividing a short history by twelve would manufacture a burst that is really coverage. "First seen" means the first filing of that form type in OUR records, which for a company we began indexing recently is a statement about us. A late-filing notice is Form NT 10-K or NT 10-Q, which the issuer files itself.

Showing the first 10 of 45 rows. 35 more in this table, plus every column the display leaves out.

Filings behind these tables

Every filing indexed in the month, with the form, the period it covers, any 8-K item codes, and its accession number.

Filings behind these tables. Every filing indexed in the month, with the form, the period it covers, any 8-K item codes, and its accession number. Showing the first 10 of 478 rows.
Filed	Company	Form	Period covered	8-K items	Accession
2026-05-01	Spire Global	S-1/A	–	–	0001193125-26-198662
2026-05-01	Spire Global	424B3	–	–	0001193125-26-199074
2026-05-01	Spire Global	CORRESP	–	–	0001193125-26-200962
2026-05-01	Leidos	S-8	–	–	0001193125-26-201395
2026-05-01	HawkEye 360	S-1/A	–	–	0001628280-26-029373
2026-05-01	Viasat	144	–	–	0001950047-26-003875
2026-05-04	BWX Technologies	4	2026-04-30	–	0001123292-26-000591
2026-05-04	Collins Aerospace	8-K	2026-04-30	5.07	0001140361-26-018932
2026-05-04	Spire Global	424B3	–	–	0001193125-26-204121
2026-05-04	Firefly Aerospace	424B3	–	–	0001193125-26-204359

Item codes are reproduced exactly as EDGAR records them and are not translated into descriptions here. Every row links to the filing on sec.gov.

Showing the first 10 of 478 rows. 468 more in this table, plus every column the display leaves out.

A joint Form 4 reports one set of shares held by several related reporting persons. The line is attributed to the first person named and the others are listed beside it; attributing it to each would multiply the block by the number of filers.

Form 3, an insider’s initial statement of holdings, is not imported. It reports a standing position rather than a transaction, and counting it as one would invent a trade on the day every director joined a board.

Schedule 13D and 13G figures come only from structured XML submissions, which the SEC mandated from 2024-12-18. Earlier filings are free-text cover pages: they are indexed and never scraped for share counts. Percent of class is the figure the filer stated and is not recomputed by us.

Filing-cadence comparisons use each company’s own trailing monthly average over the months we actually hold filings for, and the number of those months is printed beside the average. A company we began indexing recently would otherwise show a burst that is really coverage.

Coverage is the tracked companies carrying a ticker that resolves to an SEC filer through EDGAR’s official ticker-to-CIK map. Foreign-listed and privately held space companies file none of these forms, so their absence says nothing about them.

This release reports what was filed. It contains no recommendation, rating, target or forecast, it does not consider any reader’s circumstances, and it is not investment advice.

Our parsed SEC history begins 2025-01-01. That is a backfill boundary, not a claim about what happened before it.

Form 4s are filed within two business days of a transaction and Form 5s can report a transaction months later, so a month’s figures can grow after the month ends. Each edition states the date it was computed, and a recomputation that moves is a correction rather than a revision of history.

Amendments are counted as filed. A 4/A restating an earlier line appears as its own row rather than silently overwriting the original, because both were filed and both are part of the record.

Form 3 (an insider’s initial statement of holdings) is not imported at all. It reports a standing position rather than a transaction, and counting it as one would invent a trade on the day every director joined a board.

The Form 4 Rule 10b5-1 checkbox is not parsed, so this release cannot tell you whether a sale was executed under a pre-arranged plan adopted months earlier. That distinction matters and we do not have it.

Nothing here is adjusted for share splits, and share counts are as reported on each filing.

Every figure on this page is a count, a sum or a difference over our own rows. Nothing is model-generated, estimated, projected or scored, and no figure is a recommendation.

2026-05-08	Parsons	Smith Carey A.	Director, Officer (President & CEO)	12,000	49.94	$599K
2026-05-13	Parsons	Ball George L.	Director	10,000	50	$500K
2026-05-11	Parsons	McMahon Harry T.	Director	10,000	49.14	$491K
2026-05-12	Parsons	Holdsworth Mark Keith	Director	6,754	51.54	$348K
2026-05-20	Boeing	TILDEN BRADLEY D	Director	1,370	218.5	$299K
2026-05-08	HawkEye 360	Finelli Francis Alphonse	Director	10,000	26	$260K
2026-05-08	HawkEye 360	Finelli Francis Alphonse	Director	9,615	26	$250K
2026-05-12	Parsons	Holdsworth Mark Keith	Director	3,246	50.7	$165K
2026-05-08	HawkEye 360	Finelli Francis Alphonse	Director	5,000	26	$130K
2026-05-08	HawkEye 360	Finelli Francis Alphonse	Director	5,000	26	$130K

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