YSS York Space Systems (YSS) Insider Trading, Ownership & Congress Trades
Aerospace & Defense · Guided missiles & space vehicles & parts · CIK 0002086587
SEC filings
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
112
13F, latest reported quarter
What the filings say about YSS
Insiders, 180 days
-$27.1M net sold
1 seller · 0% of sales under a 10b5-1 plan
York Space Systems insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, York Space Systems Inc. insiders sold a net $27.1M of stock across 16 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-27.
Insider
Filed
Shares
Value
Since filing
Context
- 13 earlier Form 4 trades (code P or S) here by this insider (1 buy, 12 sales), the last on Aug 6, 2026.
- The trade is 1.2% of the 16,517,115 shares held after it.
- No other insider sold within 30 days.
- 112 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider BlackRock Portfolio Management LLC sold about $2.2M of YSS on Aug 7, 2026; 112 funds added in the latest 13F quarter.Context
- 12 earlier Form 4 trades (code P or S) here by this insider (1 buy, 11 sales), the last on Aug 5, 2026.
- The trade is 1.2% of the 16,717,285 shares held after it.
- No other insider sold within 30 days.
- 112 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider BlackRock Portfolio Management LLC sold about $2.3M of YSS on Aug 6, 2026; 112 funds added in the latest 13F quarter.Context
- 9 earlier Form 4 trades (code P or S) here by this insider (1 buy, 8 sales), the last on Aug 4, 2026.
- The trade is 0.1% of the 16,931,394 shares held after it.
- No other insider sold within 30 days.
- 112 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider BlackRock Portfolio Management LLC sold about $180.1K of YSS on Aug 5, 2026; 112 funds added in the latest 13F quarter.Context
- 9 earlier Form 4 trades (code P or S) here by this insider (1 buy, 8 sales), the last on Aug 4, 2026.
- The trade is 0.7% of the 16,930,673 shares held after it.
- No other insider sold within 30 days.
- 112 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider BlackRock Portfolio Management LLC sold about $1.6M of YSS on Aug 5, 2026; 112 funds added in the latest 13F quarter.Context
- 9 earlier Form 4 trades (code P or S) here by this insider (1 buy, 8 sales), the last on Aug 4, 2026.
- The trade is 0.1% of the 16,918,789 shares held after it.
- No other insider sold within 30 days.
- 112 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Insider BlackRock Portfolio Management LLC sold about $181.6K of YSS on Aug 5, 2026; 112 funds added in the latest 13F quarter.16 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$27.1M over 180 days
-$27.1M over 90 days · -$27.1M of it by a 10%+ holder
below 77% of Aerospace & Defense
Congress
no House purchase disclosed in the last 12 months
Funds
112 funds bought in last quarter
below 65% of Aerospace & Defense
Revenue
+10.4% year over year (latest quarter)
more than 50% of Aerospace & Defense
Margin
-42.5% net margin (latest quarter)
below 76% of Aerospace & Defense
Buybacks
no share repurchases reported
Short interest
21.1% of the float short (float per yahoo 2026-10-26) · 2.6 days to cover · settled 2026-09-30
more than 76% of Aerospace & Defense
What changed in the last 30 days
Nothing new filed in the last 30 days
Watch YSS
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-81.2%12M
Insider buyInsider sell
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns YSS: institutional holders (13F)
13F holdings, latest reported quarter
19,212,689 sh
$473.0M
11,728,057 sh
$288.7M
2,726,783 sh
$67.1M
1,963,942 sh
$48.4M
1,904,718 sh
$46.9M
Congress trades in YSS
No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
YSS planned insider sales (Form 144)
No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
YSS mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Global X Space Tech ETF
$2.3M position · as of 2026-05-31
3.1%
Tema Space Innovators ETF
$72.5M position · as of 2026-05-31
2.8%
Roundhill Space & Technology ETF
$1.6M position · as of 2026-06-30
2.1%
Procure Space ETF
$7.6M position · as of 2026-07-31
1.3%
Timothy Plan Small Cap Value Fund
$1.2M position · as of 2026-06-30
0.6%
Meridian Small Cap Growth Fund
$1.5M position · as of 2026-06-30
0.6%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
The complete filing record, in one place.
The record shows a net $27.1M sold by insiders over 180 days, 112 funds added last quarter. Each figure is a federal filing, dated the day it went public.
YSS financials
Revenue growth
+10.4%
XBRL, annual
Net margin
-42.5%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
n/a
fewer than four consecutive quarters of revenue filed
Revenue, TTM YSS
| none filed |
| Jun 2026 | $92.5M |
| Mar 2026 | $116.3M |
| Jun 2025 | $83.8M |
| Mar 2025 | $106.3M |
At each fiscal year end
Single quarter
Net margin, TTM
n/a
needs four consecutive quarters of both revenue and net income
Net margin, TTM YSS
| none filed |
| Jun 2026 | -42.5% |
| Mar 2026 | -98.7% |
| Jun 2025 | -28.9% |
| Mar 2025 | -11.0% |
At each fiscal year end
Single quarter
Free cash flow, TTM
n/a
fewer than four consecutive quarters of operating cash flow
Free cash flow, TTM YSS
| none filed |
| Jun 2026 | -$103.5M |
| Mar 2026 | -$86.6M |
| Jun 2025 | -$20.4M |
| Mar 2025 | -$80.7M |
At each fiscal year end
Single quarter
Debt to equity
0.08x
long-term 2026-06-30 plus current 2026-06-30; equity 2026-06-30
Debt to equity YSS
| none filed |
| Jun 2026 | 0.08x |
| Mar 2026 | 0.09x |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
n/a
needs four quarters of operating cash flow
Cash flow to debt YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
n/a
fewer than four consecutive quarters of net income
Return on equity YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
n/a
fewer than four consecutive quarters of net income
Return on assets YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
n/a
fewer than four consecutive quarters of operating income
Return on invested capital YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
n/a
fewer than four consecutive quarters of operating income
Return on capital employed YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
n/a
fewer than four consecutive quarters of diluted EPS
P/E, trailing YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$481.1M
market value at close 2026-10-26 on 2026-08-12 shares, plus long-term 2026-06-30 plus current 2026-06-30, minus cash 2026-06-30
Enterprise value YSS
| none filed |
| Jun 2026 | $2.8B |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
n/a
fewer than four consecutive quarters of operating cash flow
FCF yield YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
n/a
fewer than four consecutive quarters of diluted EPS
PEG, trailing YSS
| none filed |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
YSS Stock Sonar score 5/7 axes
Find similar shapesCompareYSS ranks highest on financial health (66th percentile) and risk and compliance (52nd), and lowest on insider conviction (10th), among Aerospace & Defense peers.
5 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
YSS filings, in plain words
Are York Space Systems insiders buying or selling YSS?
In the 180 days to 2026-10-27, York Space Systems insiders were net sellers, a net $27.1M across purchases and sales reported on Form 4, by 1 seller.
Read the full summary
In the 180 days to 2026-10-27, York Space Systems insiders were net sellers of YSS, a net $27.1M across purchases and sales reported on Form 4 by 1 seller. Most of that figure, $27.1M, came from a holder of 10% or more rather than an officer or director. None of the 13 insider sales was flagged as made under a Rule 10b5-1 plan. Each figure is counted from SEC and House filings as of 2026-10-27, dated the day the filing was made public.
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