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
9
7 distinct insiders · 11 in November 2025
Open-market insider sales
156
44 distinct insiders · 215 in November 2025
Disclosed purchase value
$505K
9 of 9 purchase lines state a price; sales totalled $439M
5% holder filings
10
4 holders with no earlier filing in our records · 6 on Schedule 13D
Filings indexed
268
Across 36 of 45 covered issuers
Lines excluded from the two figures above
213
Grants, tax withholding, exercises and gifts — automatic events, not trades. Broken out in full below.
Open-market insider purchases, December 2025
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.
Open-market insider purchases, December 2025. 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. 9 rows.
Date
Company
Insider
Role
Shares
Price
Value
2025-12-16
SAIC
Natarajan Prabu
Officer (EVP, Chief Financial Officer)
2,000
100.488
$201K
2025-12-16
SAIC
REAGAN JAMES
Director, Officer (Interim CEO)
1,000
100.165
$100K
2025-12-17
AST SpaceMobile
LARSON KEITH R
Director
715
70.02
Open-market insider sales, December 2025
Every transaction reported under code S — a sale in the market — largest disclosed value first.
Open-market insider sales, December 2025. Every transaction reported under code S — a sale in the market — largest disclosed value first. Showing the first 10 of 156 rows.
Date
Company
Insider
Role
Shares
Price
Value
2025-12-09
AST SpaceMobile
AMERICAN TOWER CORP /MA/
Other
2,288,621
69.75
$159.6M
2025-12-15
Rocket Lab
Beck Peter
Director, Officer (CEO)
537,294
56.616
$30.4M
2025-12-15
Rocket Lab
Beck Peter
Director, Officer (CEO)
373,108
57.626
$21.5M
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
40
-2,579,814
$-146.2M
0
Kratos Defense & Security Solutions
KTOS
0
36
-782,517
$-58.8M
0
Satellogic
SATL
1
25
0
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
9
15,365
$505K
yes
Open-market sale
S
156
8,732,460
$438.7M
yes
Grant or award
A
59
861,172.828
$263K
no
Shares withheld for tax or exercise price
Schedule 13D and 13G filings, December 2025
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, December 2025. 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. 10 rows.
Filed
Company
Holder
Form
% of class
Change (pts)
Shares
2025-12-08
Intuitive Machines
Kamal Seyed Ghaffarian
SCHEDULE 13D/A
25.6
-0.4
39,711,374
2025-12-08
Intuitive Machines
Ghaffarian Enterprises, LLC
SCHEDULE 13D/A
24.3
-0.4
37,098,059
2025-12-31
Sidus Space
CVI Investments, Inc.
SCHEDULE 13G
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 36 rows.
Company
Filings
8-K
Trailing 8-K/mo
Above average
First seen
Late notices
Kratos Defense & Security Solutions
24
0
0.64
-0.64
—
0
Rocket Lab
19
1
1.09
-0.09
—
0
Globalstar
17
0
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 268 rows.
Filed
Company
Form
Period covered
8-K items
Accession
2025-12-01
Kratos Defense & Security Solutions
144
—
—
0001114923-25-000004
2025-12-01
Globalstar
144
—
—
0001571391-25-000018
2025-12-01
Globalstar
4
2025-11-28
—
0001571391-25-000019
2025-12-01
Kratos Defense & Security Solutions
144
—
—
0001620329-25-000004
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 378 Form 4 and Form 5 transaction lines, 10 Schedule 13D/G holder rows and 268 indexed filings for the month, across 45 issuers we hold an EDGAR filing index for.
•Of those transaction lines, 165 are open-market trades (codes P and S) and 213 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
Cite or embed this data
Citation
SpaceNexus Space Insider Activity, December 2025. SpaceNexus, data as of 2025-12-31. https://spacenexus.us/releases/space-insider-activity/2025-12. https://spacenexus.us/releases/space-insider-activity/2025-12 (retrieved 2026-09-18).
Free to cite and embed with attribution. Data updates continuously; the citation date pins your retrieval.
SN
By SpaceNexus Research
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
$50K
2025-12-24
AST SpaceMobile
LARSON KEITH R
Director
625
80
$50K
2025-12-10
AST SpaceMobile
LARSON KEITH R
Director
675
72.71
$49K
2025-12-09
Satellogic
CANTOR FITZGERALD, L. P.
10% owner
10,000
1.88
$19K
2025-12-23
SAIC
DiFronzo Vincent P.
Officer (EVP,-Air Force & Comb Commands)
150
102.89
$15K
2025-12-31
SAIC
Attili Srinivas
Officer (EVP, Civilian)
100
101.26
$10K
2025-12-16
SAIC
Hageman Hilary
Officer (EVP General Counsel, Secretary)
100
100.21
$10K
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.
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 156 rows. 146 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.
$90
0
Globalstar
GSAT
0
10
-15,011
$-909K
17,957
Intuitive Machines
LUNR
0
9
-2,350,000
$-36.8M
0
Viasat
VSAT
0
8
-271,480
$-9.6M
63,000
AST SpaceMobile
ASTS
3
4
-2,342,606
$-163.6M
625,000
Palantir Technologies
PLTR
0
6
-29,000
$-5.0M
0
SAIC
SAIC
5
0
3,350
$337K
20,902
BlackSky
BKSY
0
4
-37,416
$-721K
7,050
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.
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.
F
50
438,925.802
$8.5M
no
Derivative exercise or conversion
M
76
5,252,043
$5.3M
no
Disposition to the issuer
D
5
2,247,190.907
$925K
no
Gift
G
19
64,351
—
no
Other, as coded on the filing
J
4
716,612
—
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.
7.4
—
4,000,000
2025-12-31
Sidus Space
Heights Capital Management, Inc.
SCHEDULE 13G
7.4
—
4,000,000
2025-12-05
Iridium Communications
ARK Investment Management LLC
SCHEDULE 13G/A
3.93
-2.19
4,116,849
2025-12-05
Iridium Communications
Catherine D. Wood
SCHEDULE 13G/A
3.93
-2.19
4,116,849
2025-12-08
Intuitive Machines
GM Enterprises, LLC
SCHEDULE 13D/A
1.8
-0.1
2,241,121
2025-12-11
AST SpaceMobile
American Tower Corporation
SCHEDULE 13D/A
0.84
—
2,382,036
2025-12-11
AST SpaceMobile
ATC TRS II LLC
SCHEDULE 13D/A
0.84
—
2,382,036
2025-12-08
Intuitive Machines
Intuitive Machines KG Parent, LLC
SCHEDULE 13D/A
0.2
0
249,080
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.
0.78
-0.78
—
0
AST SpaceMobile
16
0
3
-3
—
0
Iridium Communications
15
1
0.73
0.27
—
0
BlackSky
14
1
0.64
0.36
424B5; CORRESP; EFFECT
0
General Dynamics
12
2
0.73
1.27
—
0
Momentus
10
4
2.36
1.64
—
0
Boeing
10
2
1
1
S-8 POS
0
Virgin Galactic
9
2
0.64
1.36
S-3
0
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 36 rows. 26 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.
2025-12-01
CACI International
8-K
2025-11-25
1.01,2.03,9.01
0001628280-25-054481
2025-12-01
Kratos Defense & Security Solutions
144
—
—
0001950047-25-009536
2025-12-01
Kratos Defense & Security Solutions
144
—
—
0001950047-25-009540
2025-12-01
Kratos Defense & Security Solutions
144
—
—
0001950047-25-009555
2025-12-02
Gilat Satellite Networks
6-K
2025-12-02
—
0001178913-25-003979
2025-12-02
Kratos Defense & Security Solutions
144
—
—
0001950047-25-009646
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 268 rows. 258 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.
•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.