Teledyne (NYSE: TDY) controller sells 49.4% of shares held after exercising options

What happened

Cynthia Y. Belak, Senior VP and Controller of Teledyne Technologies Inc (NYSE: TDY), sold 4,528 shares on Nov. 11 after exercising options.

The sale came in two blocks: 4,313 shares at a weighted average of $657.42 and 215 shares at $658.14. The total was about $2.98 million. Trades in the larger block ranged from $657.11 to $657.99. Trades in the smaller block ranged from $658.02 to $658.26.

The shares came from options exercised the same day. Four grants were exercised: 2,843 options at $441.51, 94 at $429.39, 1,070 at $360.39 and 521 at $441.98. Belak held 4,642 shares afterward.

Key numbers

Metric	Latest	Change	Source
Shares sold	4,528 shares		SEC Form 4
Total value of shares sold	$2.98 million		SEC Form 4
Weighted average sale price, larger block	$657.42		SEC Form 4
Shares held after the sale	4,642 shares		SEC Form 4
Shares sold as share of pre-trade holding	49.4%		Calculated from SEC Form 4

Read more: Teledyne Technologies (TDY) company research

Why it matters

OptimistFi calculates that the shares sold equal 49.4% of the 9,170 shares Belak held before the trade. That count includes the shares acquired through the option exercises.

The shares sold equal the shares acquired, so Belak's holding afterward matches the holding before the exercises. Every sale price was above every exercise price.

The four exercised grants were set to expire between July 27, 2031 and Jan. 23, 2034, the filing says. The shares are reported as directly owned, and Belak signed the form on Nov. 11.

The retained shares include about 3,760 held by the Belak Family Trust and about 882 in the Teledyne Technologies 401(k) Plan. The 401(k) figure uses plan information received as of Jan. 20, 2026. The total leaves out 1,766 restricted stock units.

OptimistFi has argued that Teledyne compounds value by selling high-margin sensing and instrumentation into niche industrial, aerospace and defense markets and by adding accretive acquisitions. The option exercise and sale leaves that case unchanged.

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What's next

Belak still holds 1,040 options, exercisable since Jan. 23, 2025.

Teledyne's next quarterly earnings report is the next scheduled test of the case. Stronger revenue and margins would support OptimistFi's view that the business compounds value. Weaker results would undercut it.

More from OptimistFi

• TDY stock: research and coverage of Teledyne Technologies
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